After getting a bit tired of sore knees from the very hard armour in my otherwise excellent BMW Tourguard 3 Pants I decided to ditch the original armour for separate Knox Flexlite Kneepads. These were a big improvement in terms of knee comfort but the silicone grippers triggered an allergic response from my legs after a longish trip. I contacted Knox who took the pads back and replaced the silicone gripper tape with a rubber based product without extra charge. Well done Knox