I bought these products and solutions (liners shells and cork inserts) for a February vacation to Svalbard. Even though I calculated my hands accurately the shells were also large and my fingers were cold. The straps to slide all-around my wrist were not restricted and so they easily slipped http://s-symbol42962.thenerdsblog.com/4970584/the-smart-trick-of-motorschirmfliegen-that-nobody-is-discussing