I use it when skiing, and although it is warm, it gets a lot of wind. I used to use neoprene for surfing, but it seems to have better thermal insulation than that. Hello, customer. This is GVG STORE. Thank you for your valuable review. :) Ah, it would be the best if not a single bit of wind got in, but I don't think the technology has reached that level yet. That's too bad. I look forward to [HOWL Howl] developing further in the future, and I hope you enjoy using it for a long time. Thank you very much for your order. We appreciate your continued interest and support in our GVG STORE! Wishing you many blessings in the new year 2024! Thank you! :)