absorbent wrist support Material :breathable ,soft and moisture absorbing cotton material,Alumium stays stabil Product name :Tourmaline Auto-heating Wrist Brace: ... wrists,Ideal for sprains ,or after cast removal .The wrist splint with strap features neoprene ,contton,elastic construction ,so ... protection than others Size Guide: SIZE Circumference of wrist S13cm-15cmM15cm-17cmL17cm-19cmXL19cm-21cm