Columbia Gear of the Year 2013 National Geographic
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Men's Zero Rules™ Short Sleeve Shirt

Details AM6464
Style# 1533311
Greater Rewards members earn 400 points with purchase
Uses: Trail
Size & Fit Guide | Reviewers rated this product True to Size | Fit Modern Classic


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Style# 1533311
Uses Trail


A super-cooling tech tee with stretch and sun protection, this soft and lightweight men’s shirt sports our industry-leading cooling technology, which reacts with your sweat to lower the material’s temperature and keep you cool during dynamic aerobic activity in the heat.

  • Omni-Freeze ZERO™ sweat-activated super cooling
  • Omni-Wick™
  • Omni-Shade™ UPF 30 sun protection
  • Modern Classic Fit
  • Comfort stretch
  • Antimicrobial treatment protects this product from bacteria growth
  • Center Back Length: 28 in
  • Imported

  • 100% polyester ZERO interlock
Omni-Freeze™ ZERO
Sweat-Activated Cooling
High-Performance Wicking Fabric
Sun Protection

Technology Videos

Play youtube video about Omni-Freeze ZERO (tm)
Omni-Freeze™ ZERO
Blue rings react with sweat to lower the temperature of the fabric, so you feel cooler.
Play youtube video about Omni-Wick (tm)
Pulls moisture away from the body so sweat can evaporate quickly.
Play youtube video about Omni-Shade (tm)
Blocks UVA and UVB rays to help prevent sunburn and long-term skin damage.


Rated 4.6 out of 5 by 36 reviewers.
Rated 5 out of 5 by This shirt fits well and non-restrictive The product fits true to size, which I have not always found with other Columbia shirts. The lightweight material is non-restrictive to allow free movement in all activities November 9, 2015
Rated 5 out of 5 by Jungle tested recently purchased this item and wore it on a jungle trek in Thailand riding Elephants. Works like a charm and kept me cool the entire time! Love Columbia tech products. November 5, 2015
Rated 1 out of 5 by Poor fit and bad color I order two of the same shirt same size and they have a completely different fit. one is very tight and the other is very lose. There is is no consistency to the fit. Also the color I purchased was a dark charcoal color and the shirts arrived in a light grey. November 4, 2015
Rated 5 out of 5 by Outstanding Shirts Fit well, feel good, wick well, and dry fast. November 2, 2015
Rated 5 out of 5 by Good when big Im a bigger guy who wears scrubs to work and with traditional cotton style shirts i would sweat all the time. But now with the cool tech shirts i stay cooler with scrubs on and with moisture wicking if i do sweat i dont feel like i just out of a swamp. October 7, 2015
Rated 5 out of 5 by Keeps you cooler in hot weather While training for a 13 mile paddleboard race in SW FL; I was constantly battling 90 degree heat and 70% humidity and overheating was a constant concern. After wearing the shirt; I noticed a substantial difference in my body heat and ability to push through the race without being extremely fatigued in spending 3 1/2 hours in the heat in the race. This definitely made the difference in my ability to perform and I would recommend this product to anyone who is an endurance athlete and needs cooling abilities September 25, 2015
Rated 5 out of 5 by Awesome shirt! Comfortable fit, lightweight, and cool! I wear this shirt everywhere! If you are looking for a high quality shirt at a great price, look no further! September 21, 2015
Rated 4 out of 5 by Very Good Product: To Whom It May Concern, I was asked for my review of your “award winning Omni-Freeze Zero” shirts that have the following sweat activating gel packs, omni-wick fabric, and omni-shade 30 UPF fabric. During this summer when I wore it, the 7 Omni-Freeze shirts + 1 PFG (sweat activating gel packs / omni-shade 30 UPF fabric shirt) shirt I purchased performed up to their standards. I felt cool when I began to perspire, and left me feeling comfortable and drier than had I not wore those shirts. From that perspective that they made me feel comfortable during hot and humid days, these shirts are everything I could have hoped from them. Absolutely lives up to Columbia’s advertisements. I would also add that after normal cleaning and drying, that they still perform as advertised. Now I’m going to tell you why I’m not going to purchase any more until this is corrected:. They don’t have pockets. Now this may not seem like a big deal, but there were soooo many times I normally would have put a pen or a my hotel card in a shirt pocket……………..but I didn’t have a pen to write down something important, or if I had a pocket, I would have immediately put my hotel card in my pocket – instead of being locked out – yes, this happened. No pocket equals no purchase…………… Now this isn’t a make or break, but how about adding some more colors? How about brown and or burgundy? Dark colors versus white or light colors – because white shows the blue gel pack rings when activated. Or how about producing the typical white V neck under shirt gel pack T-Shirts? Omni-Freeze Zero shirts are a great products. Hopefully you’ll start producing them with pockets so I can purchase more of them. John September 5, 2015
Rated 5 out of 5 by It works. This shirt keeps me cool. I forget I'm supposed to be hot. I marked "true to size". But who knows? I got an extra large and it fits me the way I want. Size depends on what you want. Will be getting more for next season. September 3, 2015
Rated 5 out of 5 by Great casual shoes These shoes are great, they are comfortable and look good perfect for the boat or bar. August 7, 2015
Rated 5 out of 5 by Great Shirt Shirt keeps you cool, drys fast, fit is athletic on top and little more room around lower half which work great if you stomach is little bigger then you like. July 30, 2015
Rated 3 out of 5 by Nice Shirt, Weird Color Carbon Heather apparently means Purple! Luckily the nice folks at Columbia were easy to deal with for the return! July 24, 2015
Rated 4 out of 5 by very comfortable shirt The material is great for someone who is always warm. July 16, 2015
Rated 5 out of 5 by This shirt does it all Very pleased. Amazing technology good price June 28, 2015
Rated 5 out of 5 by Mens Zero rules Short Sleeve Shirt What can I say....I love these shirts so much I have several colors! I fish about 100 days a year and these are light weight, wicking, and protect you from the sun. June 27, 2015
Rated 5 out of 5 by Very Comfortable This shirt is very comfortable and feels good on you. Nice and cool. True to fit sizes. May 30, 2015
Rated 5 out of 5 by Omni-freeze Zero Awesome shirts & shorts! May 27, 2015
Rated 5 out of 5 by Just plain Works This is a fantastic shirt, I drive a go Kart, it keeps me very cool in hottest weather. It cools great with the slightest braze. May 10, 2015
Rated 5 out of 5 by What a great product This is a great product for all you outdoors individuals. Cool to wear even in hot humid Florida weather. Great on the boat as well. April 21, 2015
Rated 4 out of 5 by Zero Rules Short Sleeve T I purchased this shirt in a large and if you are looking for a great shirt that will keep you cool and fit comfortably then I recommend this shirt. The sleeves a a tad bit long for my personal liking, but not to the point where its a make it or break it. Overall a great shirt. You can probably find similar shirts that do most the same thing for a bit less money, but if you don't mine spending the extra buck than this shirt will live up to its potential. I have only recently purchased this shirt so I cannot comment about its overall durability yet. April 11, 2015
Rated 5 out of 5 by Great Shirt Love it. My husband and father both have one. It's perfect. Fits well, feels great. April 6, 2015
Rated 5 out of 5 by Comfortable Very comfortable and surprisingly warm. Not a thermal base by any means, but distinctly warmer than two other Columbia "cooling" shirts I bought. Its nice to have this as a base layer offering a little variety over the other synthetics' feeling of cool. March 25, 2015
Rated 3 out of 5 by DON'T GET THE WHITE I like this shirt a lot so I got it in multiple colors, including the white shirt. But what you don't see in the picture is the little "cooling" beads or whatever they are can be seen through the white. So instead of it being solid white, it looks like a white shirt with blue polka dots. Wish the picture was correct! March 24, 2015
Rated 5 out of 5 by Great Great I love this shirt February 12, 2015
Rated 5 out of 5 by Just what I needed!! I have a neurological illness that prevents me from sweating and therefore my body overheats easily. My wife bought this shirt for me hoping it would work to keep me cool. I wet the shirt in the sink, wring it out gently, and wear it to play golf or anything else that is strenuous. It keeps my body cool and has been great in allowing me to have a more normal life. November 7, 2014
Rated 5 out of 5 by Good value and very functional This is my second Zero Rules shirt. My wife and I bought these for overnight hikes with limited laundry facilities. It's great to be able to hand wash them and be able to wear them the next day. Lightweight, durable, and comfortable. Great go-to shirt for active people. November 6, 2014
Rated 1 out of 5 by Not the same quality as previous versions I originally wanted to purchase the Men's Total Zero T-Shirt, but as I understand, this line has been replaced by Zero Rules. The sku of the T-Shirt I wanted to buy is 1521521 - but couldn't find it on or anywhere else so I purchased the new version - Zero Rules T-Shirt (sku 1533311). The Zero Rules line is a complete disappointment. The shirt is stiff, itchy, feels like a plastic trash bag, and worst of hot (despite the Omni-Freeze tech). After looking at the labels, I realized that my older Total Zero shirt is 92% Polyester & 8% Elastane - whereas the new Zero Rules shirt is 100% Polyester. I assume this is the difference and what makes the new Zero Rules line so disappointing. October 21, 2014
Rated 5 out of 5 by Great Shirt. I purchased this shirt for a river rafting trip down the grand canyon. The shirt looks like it is good quality and will last a long time. It kept me nice and cool and dried relatively quickly when it did get wet from the rapids. October 3, 2014
Rated 5 out of 5 by Amazing works amazing the materials are great and helps a lot in Summer. September 28, 2014
Rated 5 out of 5 by Great cooling The shirt material doesn't look much different than other "cool" shirts, but on my hour plus bike rides in Texas heat, the shirt became noticeably less wet, meaning my sweat was evaporating faster, keeping me cooler. September 18, 2014
Rated 5 out of 5 by keeping cool It really works, Packing in 100 degree heat, this shirt DOES help keep you cool August 31, 2014
Rated 5 out of 5 by 10 Stars! I bought these shirts for my husband as he works in a very warm environment. He loves these shirts (and he is particular) as they do not stick or cling to his skin as he perspires. Definitely a thumbs up product! August 23, 2014
Rated 5 out of 5 by Awesome Tshirt Wow, what a great shirt. Keeps you very cool in the hottest of temperatures and very fast to dry as well. Fits a little loose, but that is the way I like my tshirts to fit. Omni-freeze is a good as advertised. I will be ordering more for sure so that I have plenty to use when there are hot outside activities. August 11, 2014
Rated 5 out of 5 by Stay cool every where! I use the Zero Rules shirts anytime I am going to be out in the summer heat for long periods of time. I have recently returned from a trip to Disney and Sea World where these shirts kept me cool and comfortable while drying almost instantly after riding water rides and dodging the rain. I also use these shirts to work out in. Omni-Free Tech is great for keeping you cool. June 11, 2014
Rated 5 out of 5 by Great shirt Bought both men's and women's. Women's true to size, men's SLIGHTLY large. Will buy more. June 11, 2014
Rated 5 out of 5 by Good looking shirt. For reference I am 5'8", and 175lbs. This shirt in Large fits me great, a little loose fitting, which is how I like to wear t-shirts. Everything fits and feels true to size, materials are nice and feel good against skin, technology is there and works as advertised. I could fit a Medium no problem but I intentionally ordered a size up because I like it that way. Will be ordering 5 or so more for this summer. April 25, 2014
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Size & Fit Guide

Size Chart

Size & Fit Guide
Men's Fit Guide
Body contouring fit conforms to movement.
Body skimming fit with end-use mobility in mind.
Modern Classic
Universal, easy fit for comfortable range of motion.
Modern Classic
Most generous fit for a full spectrum of movement.
Men's Body Measurement (Inches)
Pant Size
Neck 14-14.5 15-15.5 16-16.5 17-17.5 18-18.5 19-19.5
Chest 32-35 35-38 38-41 42-45 46-49 50-53
Sleeve Length 32 33 34 35 36 37
Waist 26-29 29-32 32-35 36-39 40-43 44-47
Hips 32-34 35-37 38-40 41-43 44-46 48-50
Inseam Varies by Item
Pant Size
Neck 17-17.5 18-18.5 19-19.5
Chest 42-45 46-49 50-53
Sleeve Length 35 36 37
Waist 36-39 40-43 44-47
Hips 41-43 44-46 48-50
Inseam Varies by Item
How to Measure
  • 1. Neck: Measure at the base or thickest part of your neck.
  • 2. Chest/Bust: Measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.
  • 3. Waist: Measure around the natural waistline, allowing the tape measure to sit comfortably.
  • 4. Sleeves: Start at the center back of your neck and measure across the shoulder and down to the wrist. Round up to the next even number.
  • 5. Inseam: Measure from the top of the interior leg to the bottom of the ankle.
  • 6. Hips: Measure around the fullest part of your hips.

How to Measure

Columbia Fit Guide

How to Measure

  • Fold up at dotted line.
  • Place against a wall or other 90 degree surface.

    Place heel against fold/wall on flat level surface.
  • Mark the end of the longest toe with a pen or pencil.
  • Measure both feet and use the larger measurement.
  • Read measurement and compare to size chart.
  • When comparing on the size chart, determine the closest larger measurement and use that number to determine your shoe size for your country’s shoe measurement standard.

Shipping & Returns

Shipping & Returns
Shipping Information
Shipping Method Rate Expected Delivery Time
UPS Ground $6.00 3-7 Business Days
UPS 2-Day Air $12.00 2-3 Business Days
UPS Overnight $19.00 1-2 Business Days
Free Standard Shipping
Return Policy

Returns are accepted within 60 days of the purchase date online or in-store. Your apparel must be in original and unworn condition, with tags still attached. Footwear returns must also include the original box.

Still Have Questions

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