back of the leg with both straps attached main body 14 is positioned to completely cover the patella b extending beyond the sides of as well as above and below the patella and extend to a position covering the upper shin d of the user 39 s leg see fig4 main body 14 has flexible material member 27 connected at the interior thereof for example by sewing thus defining retaining enclosure 29 fig4 between main body 14 and member 27 material member 27 is made from material the same or similar to that forming wrap 13 and has opening or slot 31 formed therein for access to the interior of enclosure 29 material member 27 is of a size sufficient so that when positioned it will cover the same areas of the leg as main body 14 see fig4 pad 33 having a flowable material enclosed therein is receivable in and removable from retaining enclosure 29 through opening 31 thereby accommodating pad replacement for example various pads having different flow characteristics and weights as discussed below might be chosen for different applications or for user 39 s of different weights pad 33 includes discreet material filled compartments 35 37 and 39 each isolated against flow of material contained therein from one compartment to another as shown in fig4 compartment 35 is shaped to cover and cushion the patella b of a user when kneeling while compartment 37 is shaped to provide perimeter support of the patella b compartment 39 is shaped to provide support both directly between upper shin d and a kneeling surface and laterally between the patella b and the upper shin d to thereby redistribute support and weight and thus patellar pressure to the upper shin d when the.