I don't have the website..but this is what it said on the package for them,
Now made of 100% virgin perforated neoprene that allows the leg to breathe and heat to escape so your horse's legs stay cooler.
A shock-absorbing splint pad gives maximum protection to the splint bone, tendons, and other soft tissues. Guards against crossfire and other scalping injuries.
A suspensory rib is positioned between the tendon and the cannon bone to ensure proper boot alignment.
A patented Cradle Fetlock System provides maximum support to the lower limb.
The entire fetlock is protected by a double layer of shock absorbing neoprene.
A layer of tough, bulletproof material fitted on the cup area ensures durability.
A series of fitting darts provides for a clean, close fit.
Bound edges help keep dirt and debris out.
A round cut box-stitched Velcro attachment with an aggressive hook-and-loop closure makes the Legacy more secure.