The Alder Quatro fin socThe Alder Quatro fin socks are made from 2.5mm thick soft double-lined neoprene with flatlocked seams. Designed to be worn under your fins for comfort and warmth.ks are made from 2.5mm thick soft double-lined neoprene with flatlocked seams. ADULT - S (UK -6/7)
ADULT - M (UK 8/9)
ADULT - L (UK 9/10)
ADULT - XL (UK 11/12)
ADULT - 2XL (UK 12/14)

JUNIOR - XL (UK 2/3)
JUNIOR - 2XL (UK 3/4)
JUNIOR - 3XL (UK 4/5)