The Wave pattern tooth profile applies alternating lateral force to each chain link to actively retain the chain to the ring – going beyond narrow/wide implementations that rely solely on friction

as well as the strap and buckle

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Pirelli's unique SmartGrip single compound rubber has excellent tear resistance and chemical grip qualities

These are more expensive as they are much larger than normal (more material and machining required)

Ion K-Pact Knee Pads - XL - Multicolour Dangerous Goods The Wave pattern tooth profileThe K Pact Knee Pads have been in Ion's line up for quite a few years now. They have seen some minor revisions over the last few years, mainly in the breathability department. Most of the knee pad remains unchanged which isn't a bad thing. The K Pact Knee Pad has been a top performer since it's inception. Comfy enough to pedal in but sturdy enough to bomb DH tracks with. Awesome. Who's this item for? This knee pads is a great option for DH, Enduro and