Material:Leica Nice workmanship， with anti slip band， no easy to fall off. The fabric is breathable and elastic， sweat can be expeled from the breathable fabric. Well portect muscles from pulling during in outdoor activities such as basketball， football， cycling， golf， baseball...

Size: M， L，XL

Size reference：

M 51cm Head circumference: 30-36cm mouth circumference: 18-28

L 52cm Head circumference: 34-44 mouth circumference: 20-30

XL 53cm Head circumference: 38-46 mouth circumference: 22-32 Packages include: 1pcs

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