







CLEARANCE – We have a few items left over from our older Technical T-Shirt stock with a slightly slimmer fit. Customers who prefer the older fitment may be able to pick up a discounted T-shirt that perfectly matches the sizing of other short sleeve items they currently own.
Our technical T-shirts are lightweight, breathable, quick-drying, and available in loads of unique designs. The wicking ability and technical functionality makes them ideal for all kinds of outdoor activities, such as mountain biking, trail running and hiking, or whenever your clothing has to deal with adverse moisture conditions, either externally from the weather or internally from perspiration.
T-Shirt Size Guide
Short Sleeve T-Shirt Size Chart

Size | ½ Chest Width | Body Length |
S | 19.5" | 27" |
M | 20" | 28" |
L | 21.5" | 29" |
XL | 23" | 30" |
XXL | 24.5" | 31" |
Odyssey Activewear Tech T-shirts are designed to have an “Athletic” fit with a slightly tighter cut across the chest, shoulders and arms. For a looser, more relaxed fit opt for a size up.
Sizing Tips
- Lay out your own T-shirt flat and measure from pit-to-pit and shoulder-to-hem. Compare the figures to the Chest Width and Body Length sizes.
- Odyssey Activewear clothing dimensions are similar to global brands. Customers should generally order their usual size.
Delivery Information
Destination | Avg. delivery time | Shipping cost |
🇬🇧 UK | 2-3 days |
£4.99 |
🌐 International | 4-7 days |
£15 |
Shipping destinations outside the UK may be liable to import duty or customs charges. Any additional fees must be paid by the recipient.
Refunds & Returns
Returns are accepted within 30 days of receiving your order. Conditions apply, please see the Returns page for more information.
What our customers say:
“Brilliant products, fit well and feels good when on. Much better than the bigger brands. Customer service just as spot on.”
Adam

“I received mine today and immediately ordered another 3! I now have 7 different colours/designs, I love these tees. Beautiful fit super soft and great quality, so comfortable and breathable.”
Colin
“I used to spend a lot more on mountain bike jerseys and the quality of these is better than some I’ve paid a lot more for. I really dig the designs, they cross over so many disciplines.”
Christian

“Nice designs, fit well, good service from the guys at Odyssey Activewear. Will be defo purchase some more for summer 🤟🏻”
Jonathan
“Why did I wait so long to buy these?! I should have bought when I first saw them! WOW! High quality material fit for the job and they look awesome on. I am hooked already, this will be my go to gear for the MTB! Brilliant, thank you!”
Brian

“Great quality clothing brand, I think I have 7 of their jerseys now as well as caps! Highly recommended.”
Matt
“Love my jersey, used it on multiple trail centre days. Breathes well, wicks and drys fast, and most importantly it’s comfy.”
Connor

“My latest shirt and new favourite. I have 2 long sleeve and 2 short now. I’ve tried them all... Fox, TLD, Endura... and these are by far superior in just about any metric you can apply – feel, fit, function, cost.”
Pez
“From all of my jerseys including Five Ten, Endura and many others I must say Odyssey Camo is at the top. Best quality, will get more! Highly recommended.”
Marcin

“This T-shirt does everything it says on the tin, as well as being stylish and a great fit too.”
Pete
“Really nice fabric, light and good for wicking sweat away. The printed labels also make a big difference too - No scratching on the inside.”
Matt

“I can 100% say these are some of the best quality riding tops I’ve bought! Much better than most of the major brands that are far more expensive!”
Ady
“Ordered one long sleeve just to check quality and size. Outstanding, bought another 2 immediately. Great quality and look.”
Darren

“Great products and service. The jerseys have a real quality feel and the designs and colours are superb. Brilliant for use on the bike or in the gym! Will be back again for more!!”
Anthony
“Great company to deal with and top customer service. Very rare these days. Will definitely use again, 5 stars”
Scott

“The quality of the jersey is very good. Strong sewing, wears comfortably and has no restrained movements, good breathability when riding a mountain bike. I even went shopping in it because I forgot I was wearing it!”
Tom
“Just received my order of two jerseys. Arrived promptly, very well made, extremely comfortable and epically cool designs!! Customer service is also top notch… My new favourite MTB gear supplier!”
Nick


Premium Micro Mesh Fabric
Odyssey Activewear performance tops use a premium 160gsm micro mesh interlock fabric to create a lightweight, soft, and comfortable shirt that is breathable and quick-drying. By wicking sweat from the body and allowing it to quickly evaporate, it keeps you cool and dry.
Flexible Shoulder Panel
The raglan sleeve pattern provides increased mobility with an extended arm panel, joined with a diagonal seam. Originally designed to allow for greater sword movement during battle, it’s now the preferred clothing design for sports and activities that require unrestricted arm movement.
No-Fade Sublimated Graphics
Full colour designs are permanently embedded into the fibres of the fabric using a dye sublimation process, rather than printed on the surface. Graphics won’t fade or crack even after multiple washes. The Tagless printed neck label also eliminates chafing.
Subtle Odyssey Branding
We like to let our designs shine, so you won’t find huge logos all over our performance tops. All you’ll see is a little Odyssey Activewear brand mark on the chest. This doesn’t help admirers figure out who it’s made by though, so we hope our customers help spread the word out on the trails!