SealSkinz recommend the following care instructions:
Washing ...
SealSkinz® can be washed in the machine – but at no more than 40°C. When washed at higher temperatures the adhesive that holds the membrane in place between the inner and the outer layer melts and your glove ‘delaminates’. When this happen your SealSkinz® will rustle – they will also need to be thrown away ...
Drying ...
As with washing, if SealSkinz® are subjected to temperatures over 40°C, or indeed direct heat (such as a radiator, or an iron) then they can delaminate. The best way to dry them, after washing, is to turn them inside out and dry them in the airing cupboard or drip dry overnight.