The Co36 Mock Neck T-Shirt is a modern essential that blends refined style with everyday comfort. Crafted from super-soft, heavyweight fabric, it features a sleek, structured neckline that adds a touch of sophistication while maintaining a comfortable, tailored fit. Designed for versatility, this tee ensures you're never overdressed or underdressed, whether worn solo or layered. With its timeless design and premium feel, the Mock Neck T-Shirt is a standout piece that elevates any wardrobe. Effortless, stylish, and built to last.
Find your size
The Mock Neck T-Shirt fits true to size, not too tight, not too loose.
Measure your chest at the widest point.
If chest and calculator give different sizes, go with chest.
Size
Chest (in)
Waist (in)
XS
33–34"
26–28"
S
35–37"
28–30"
M
38–40"
31–33"
Lmost popular
41–43"
34–36"
XL
44–46"
37–39"
XXL
47–49"
40–42"
The Mock Neck T-Shirt fits true to size, fitted through the shoulders and chest, easy through the torso. Between sizes? Go up.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
Shipping Information
- We Offer Free US Shipping. - Ships within 1-2 business days. - Standard 3-5 day delivery.
Customer Support
Our friendly staff is here to assist you with any of your questions.
FAQ’s
Visit our FAQspage to find answers to common questions.
Contact Us
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about the fit
A perfectly balanced fit, tailored to flatter with structured shoulders, 4-way stretch, and a clean, modern silhouette that’s designed for all-day comfort, effortless movement, and a polished look for any occasion.
Wardrobe Specs
Craftsmanship
Cool Comfort: Engineered with fabric that stays cool to the touch, ensuring all-day freshness.
Adaptive Stretch: 4-way stretch provides unrestricted movement for any activity
Elevated Structure: A heavier-weight fabric offers a refined, structured look, blending comfort with sophistication.
Structured Elegance: Tailored shoulders create a polished, elevated look.
Performance
All-Day Performance: Designed to stay comfortable and polished no matter the occasion.
Effortless Confidence: Look sharp and feel your best in every situation.
Simplify Your Day: Eliminate decision fatigue and the morning rush with a wardrobe designed to make dressing intuitive, effortless, and always on point.
I was skeptic at first but I figured, why not just give it a shot. And holy s*** I’m glad I did. The quality of these shirts and how they form to my body is exactly why I’ll be a repeat customer for a long time.
Men, if you want to up your game, this is it. Stop going to Ross and Temu thinking you’ll find gems there. It’s right here.
Literally the best T-shirts I’ve ever tried. The fabric feels substantial, smooth, and durable, with a clean timeless fit. I’m 6’0” & 175 lb, 40” chest, and the Large fits comfortably without looking sloppy.
CO36 should seriously release a thick Oxford shirt in classic colors. I’d buy every one — both in 100% cotton and in a 95% cotton / 5% stretch blend.
Excellent polo. Thick, durable, clean, and timeless. I’m 6’0” & 175 lb, 40” chest, and the Large fits me really well — comfortable in the chest and shoulders without looking sloppy.
CO36 should seriously make an Oxford shirt in a thick fabric and classic colors. I’d buy all of them — especially if they offered both 100% cotton and a 95% cotton / 5% stretch blend.
Really love this blue color. It goes almost gray. The fabric feels like a thick cotton. The mock neck is not too high and the length is not so long that you can still wear tucked or untucked. Not in love with the CO36 branding at the bottom but it’s fine.
Great mock neck T-shirt. I love the fit, the quality, and the overall look. I’ve been looking for a T-shirt like this for a while, and this is exactly what I wanted. I immediately ordered a few more colors. Highly recommend!
I'm very impressed. Material, stitching and fit are all fantastic. The mock turtle neck has just the right amount of rise, a problem with other manufacturers. Color choices are excellent.
Ordered one bundle, gave one mock-neck to my partner. Ordered a second bundle, gave him two. Ordered a third bundle and kept them all for myself. High neck works great under a crewneck sweater. Love the ribbed sleeves. What could be better?
The mock neck T’s have the perfect blend of quality and a crisp look for dressing up with a blazer, as well as the casual flexibility to wear with shorts and dock shoes! They are my new “go to”!
Ordered a 6 pack of polos and had to exchange 2 for different sizes. Sent them back and never got so much as an email saying they received it. Had to reach out to customer service myself and got stuck with what feels like an overseas call center that can’t actually do anything. Every time I ask what’s going on it’s “we’re checking with our back office” or “we’ll follow up soon.” They never do. I’ve asked like 4 times now.
So here I am, paid for 6 shirts and only have 4 in my closet. No refund, no replacement, no real answer, just excuses on repeat. If you’re thinking about ordering, just know that if anything goes wrong you’re basically on your own. Total waste of time and money, would not order again.
I've been waiting my whole life for this company..
95% cotton and a shirt that fits PERFECTLY... Will be returning to purchase 6 more shirts next month!
I was amazed! The fit, the feel and the quality! And the look - wore this to back-to-back meetings - felt great and definitely was noticed! Great alternative to the everyday polo or button-up.
I’ve been a buyer of Polo Tees and Sene tees the past six years. I wear a lot of mock turtlenecks in the winter months. I have for over forty years so I took a chance with this new company showing mock tees. Was so happy with my first purchase I came back and bought more. Cleaned out my old tees and happy I did.
I purchased three to start with. After wearing all three I knew the quality was superior to any r-sorts I had purchased previously so I ordered six more. You can’t go wrong with these shirts
The shirt arrived well packaged as promised. It fits well and wears well all day. I will get some more to have several available when needed. Thank you for a great product.
Nice shirt.
I would prefer longer short sleeves though. Long enough to cover, go past the biceps.
If someone has nice biceps they want to show off, due to the snug fit everyone will still be able to see their biceps.