japanese binchoutan self-heating knee pad warm old cold legs men and women joint elderly cold protection in autumn and winter sheath

silk-short summer-skin white [1mm ultra-thin]] silk-short summer-blue gray [1mm cold-proof]] silk-summer long-skin white [1mm ultra-thin]] silk-summer long-blue gray [1mm cold-proof]] silk-argy wormwood fever-skin white [3mm thick cold-proof]] silk-argy wormwood heating-blue gray [3mm thick cold-proof]] [four seasons-cold-proof-silk-long] blue and gray [four seasons-warm-silk-short] skin white silk-autumn and winter thickening-blue gray [6mm thick cold-proof]] silk-autumn and winter thickening-black and gray [6mm thick cold-proof]]

m l xl xxl