There are a variety of removable pads on the market and while originally developed for motorcycle clothing, one of the best available is the Upgrade Armour by Armourflex. They use a unique high-tech triangular shock absorbing material so that energy can be dispersed evenly over their surface. The pads are breathable, lightweight, flexible, and mold to your body shape. Using their patented Repeat Performance Technology, the pads protect against multi-strikes. Their performance more resembles external hard knee pads than the simple single layer offered by so many other insertable pads. In addition to knee protection, shoulder and elbow kits are also available.
FORCE-10 T-PRO 3L+ IMPACT KNEE PADS
A special version is sold in the US by TAD as the Force-10 T-PRO 3L+ Impact Knee Pads.