A 4mm glove is a good compromise of warmth and comfort the Billabong foil gloves have single lined neoprene so they don't allow any water to soak in this prevents wind chill. The Foil gloves are a great budget option there's no extra sealing on the seams just the standard glueing and blind stitching so they're not going to last as long as more expensive options this makes them perfect for surfers in milder areas who aren't going to be using gloves every session. The single lined outer layer of neoprene is textured so it gives you a pretty good grip on your board too it won't be as durable as a double lined glove but it will offer better grip and more warmth. Glued and Blind Stitched seams Wind resistant mesh premium neoprene Fitted minimal design Size: X-Small,Large,Medium.