keeping your hands warm and safe  . the fly mittens from level have everything a good glove needs. the membra-therm plus membrane creates a waterproof barrier between the outer and inner layers and keeps your hands warm, no matter how rough the conditions. thermo-plus is level's guarantee for perfect insulation and retention of the natural warmth of your hands. this means that the fly mittens provide up to 30% more warmth than their counterparts on the market. thanks to the special biomex protection system on the inside, you are well protected against wrist injuries. it keeps your hand in an anatomically strong position without restricting your freedom of movement.