nanjiren fever lengthened knee pad cold-proof warm joint pain hot compress old cold legs men and women elderly periostis 南极人发热加长护膝盖防寒保暖关节痛热敷老寒腿男女士老人骨膜炎

black extended style [front and rear automatic heating]] lengthened gray [front and rear automatic heating]] black extended style [front and rear argy wormwood heating]] lengthened gray [front and rear argy wormwood heating]] black [mild self-heating design]] gray [mild self-heating design]] skin color [mild self-heating design]] black [ordinary warm]] gray [ordinary warm]] skin color [ordinary warm]] lengthened skin color [automatic heating before and after]]

s (80-105) kg m(106-135) kg l(136-160) kg xl(161-180) kg xxl(181-200) kg