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Item # APN016H

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Item # APN016H

The new standard.

A back protector that can double as a hydration pack? Sounds pretty good to us. It must've sounded pretty good to the designers over at Alpinestars, too, because they created the Paragon Protective Shirt, a stretchy mesh jacket that comes with a CE-certified back protector that can be removed, replaced, and swapped out for a hydration reservoir when long XC days call for more water than impact protection. The back panel also boasts dual cutouts that let you direct the hose either over your shoulder or under your arm, while the front left shoulder features a tube loop that makes sure the hose stays where you can reach it.

As you'd expect, the stretch mesh body fabric of the Paragon is designed to sit close to your skin, the better to slide comfortably under a jersey. It's also extremely lightweight and breathable, so it won't weigh you down or trap sweat, and it conceals two padded side pockets designed to hold small gear like gloves or a multitool. Additionally, Alpinestars integrated a padded zippered pocket at the back designed to hold your phone, because if you don't get pictures of your buddy sending it, it didn't actually happen.

Tech Specs

stretch mesh
Protection Area:
Recommended Use:
mountain bike
Manufacturer Warranty:
21 days

Size chart


Men's Apparel
Chest 35 - 36in
(88.9 - 91.4cm)
37 - 39in
(94.0 - 99.1cm)
40 - 41in
(101.6 - 104.1cm)
42 - 44in
(106.7 - 111.8cm)
45 - 47in
(114.3 - 119.4cm)
Waist 30 - 31in
(76.2 - 78.7cm)
32 - 33in
(81.3 - 83.8cm)
34 - 35in
(86.4 - 88.9cm)
36 - 38in
(91.4 - 96.5cm)
39 - 41in
(99.1 - 104.1cm)
Hip 40 - 41in
(101.6 - 104.1cm)
42 - 43in
(106.7 - 109.2cm)
44 - 45in
(111.8 - 114.3cm)
46 - 48in
(116.8 - 121.9cm)
49 - 51in
(124.5 - 129.5cm)
Thigh19 - 20in
(48.3 - 50.8cm)
21 - 22in
(53.3 - 55.9cm)
23 - 24in
(58.4 - 61.0cm)
24 - 25in
(61.0 - 63.5cm)
26 - 27in
(66.0 - 68.6cm)
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

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Great concept/ Fits under jersey!

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: Small

I tend to over prepare on virtually every ride, and so far the pack has been the only way to go. I suppose it is a by-product of my experience as a guide. But there are those few days when I get out to just nail a short XC ride or go lay down some speed in the park utilizing chairlifts. When those opportunities arose in the past, I would still carry my pack, or I 'd leave it at the base of the chair and get a flat! Eventually I came across this vest in a profile feature on EWS rider Jerome Clementz. The flying frenchman said he liked its versatility and the storage is amazing. What's more is you can swap the back protector for a 2L or smaller Hydration bladder. I liked the idea and decided to pick one up. So far so good. The mesh breaths well, and the back protector is a nice creature comfort for those park days. The side pockets are padded so if you take a digger, you don't bruise yourself up too much. I would recommend this to anyone looking to shave weight and simplify their kit. The fact that it fits well under a jersey is also very important for being in stealth mode. I bought it in Small for precisely this reason. I have to peel it off like a wetsuit, but it doesn't shift or chafe under my clothing.

Great concept/ Fits under jersey!

Does it come with the water reservoir? or i have to buy as an extra? thanks!

Hey Daniel - The water reservoir is not included, you would need to buy it separately. Feel free to contact me directly with any additional questions.

- Kyle L. - Expert Gearhead