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Item # APN019L

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Item # APN019L

Suit up.

Protect your knees from sharp-edged rocks and errant foliage with the Alpinestars Fierce Knee Guards. These lightweight guards provide protection with an integrated soft shell patella piece and KEVLAR reinforced fabrics while a soft liner maintains comfort. The sleeve body features mesh construction for enhanced breathability, and silicone-embossed elastic cuffs hold the pads securely in place.

  • Durable mountain bike knee protection
  • Lightweight impact foam for cool safety
  • Reinforced for extra durability

Tech Specs

[reinforcement] KEVLAR®, mesh, elastic, foam
Protection Area:
Recommended Use:
mountain bike
Manufacturer Warranty:
21 days

Size chart


Knee & Shin Guards
Knee Circumference
(10cm above knee)
15.4 - 16.5in
(39 - 42cm)
16.5 - 17.7in
(42 - 45cm)
17.7 - 18.9in
(45 - 48cm)
18.9 - 19.7in
(48 - 50cm)
Calf Circumference 12.6 - 13.8in
(32 - 35cm)
13.8 - 15.0in
(35 - 38cm)
15.0 - 16.1in
(38 - 41cm)
16.1 - 16.9in
(41 - 43cm)
Knee Circumference
(10cm above knee)
15.4 - 17.7in
(39 - 45cm)
17.7 - 19.7in
(45 - 50cm)
Calf Circumference 12.6 - 15.0in
(32 - 38cm)
15.0 - 16.9in
(38 - 43cm)

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Fierce Knee Guards

  • Familiarity: I've put it through the wringer

I'm a professional mountain bike instructor, Trek Women's Advocate and guide so I put my equipment to the test. These are durable, well built and designed. They're also comfortable for long hours of wear during clinics and on guide trips. I would highly recommend them.

Fierce Knee Guards

Solid Protection, Stays In Place

  • Familiarity: I've used it several times

Great budget knee guards. Cover and fit around the knee well, stays in place even over rough terrain. Too bulky for any climbing but doesn't get in the way on flat or mild climbs.

Fit is It.

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size

Knee pads are semi-consumable--it is a mistake to buy a pair expecting them to last forever. Better to buy them and put them down in the dirt, and get a new pair when they blow out. These fit well, offer good coverage, and stay in place. And they cost less than a new back tire.