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The Alder 2.5mm Quatro Socks are designed using 2.5mm thick soft double-lined neoprene and flatlock construction to keep your feet warm and comfortable inside your fins.
Designed to be worn under your fins or boots for comfort and warmth.
SIZE GUIDE
| Size | UK / EU Foot Size |
| S | J12 / 25-26 |
| M | J13 / 27-28 |
| L | 1 / 29-30 |
| XL | 2 / 31-32 |
| XXL | 3 / 33-34 |
| 3XL | 4-5 / 35-36 |
