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Item # GFM0001

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Item # GFM0001


There have always been two schools of thought when it comes to body armor: bulky hard shells that focus on protection or low-profile soft shells that focus on comfort. Because of this, body armor has either been uncomfortable or it lacked adequate protection. G-Form is trying to change that with its Crash Short with Reactive Protection Technology.

Because of the glaring inadequacies of hard- and soft-shell body armor, the designers at G-Form decided to come up with a new, revolutionary form of body armor. They felt that hard shell armor was uncomfortable and soft shell armor didn't provide enough protection. G-Form's RPT splits the difference. It's both, and neither. RPT is a soft, flexible foam material that conforms to the contours of your body. However, in the event of an impact, it hardens instantly to provide the protection of a hard shell. It truly is the best of both worlds. RPT actually protects even better than hard shell because it absorbs the impact to prevent damage caused by repeated, rebounding impacts.

The Crash Short is made up of a fabric main body and five large pads: one on each thigh, one on each hip, and one on the tailbone. The main body of the Crash Short is stretchy, breathable synthetic fabric. This material allows air to pass through so your skin can breathe and you can stay cool. It also keeps the pads firmly in place so, unlike separate pads, your thigh pads stay on your thighs, your hip pads stay on your hips, and your tailbone pad stays over your tailbone.

The G-Form Crash Short is available in four sizes: Small through X-Large. It comes in Black or Yellow.

Tech Specs

[main body] synthetic
Closure System:
Recommended Use:
mountain biking
Protection Area:
thighs, hips, tailbone

Size chart


Men's Compression Apparel
Chest 35 - 38in
(88.9 - 96.5cm)
38 - 41in
(96.5 - 104.1cm)
41 - 45in
(104.1 - 114.3cm)
45 - 49in
(114.3 - 124.5cm)
49 - 52in
(124.5 - 132.1cm)
Sleeve 32 - 33in
(81.3 - 83.8cm)
33 - 34in
(83.8 - 86.4cm)
34 - 35in
(86.4 - 88.9cm)
35 - 36in
(88.9 - 91.4cm)
36 - 37in
(91.4 - 94cm)
Waist 28 - 31in
(71.1 - 78.7cm)
31 - 34in
(78.7 - 86.4cm)
34 - 38in
(86.4 - 96.5cm)
38 - 42in
(96.5 - 106.7cm)
42 - 46in
(106.7 - 116.8cm)
Inseam 31.5in
How to Measure:
For best results take measurements over your underwear, keeping the tape a bit loose.
Measure around the fullest part, across the chest points, keeping the tape horizontal.
Measure around your natural waist, keeping the tape horizontal.

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Here's what others have to say...

this is designed to fit over your bib...

this is designed to fit over your bib shorts yes?

Responded on

These are designed to be worn under a pair of baggy mountain biking shorts. They weren't really designed to be used in conjunction with a pair of bibs, but if you were looking to pair them with a bib short with a chamois, I would wear them over the bibs. This may affect the sizing somewhat with the extra layer, but I have to admit that I haven't tried that myself. If you have any other questions or concerns, feel free to shoot me an email directly to

I see that G-form just came out with a...

I see that G-form just came out with a short that has a chamois, does backcountry plan to carry that model? Thanks

Responded on

Hey MG,

I think you are talking about the Pro-B compression shorts. It doesn't look like we have them on the list at the moment but G-Form is a brand that we just picked up so it might take a while until we have their full line on our shelves.

Does this thing have a shammy in it? Or...

Does this thing have a shammy in it? Or are you supposed to wear it over a liner