I've worn a 1mm skin under my 6.5mm, and it works wonders for me. It's not so much the extra 1mm of insulation, but the 1mm acts to keep a layer of water trapped in some neoprene that does not flow easily. As a result, I stay nice and toasty.
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slingshot once bubbled...
Has anyone tried doubling up on wetsuits for colder water diving? I've got a 5mm jumpsuit, and have been considering buying a 3mm (eg Henderson Hyperstretch) to put over it rather than buying a 7. Possible advantages: cheaper to buy, increased versatility? Possible disadvantages: less mobility, scorn of my diving buddies? My searches of these forums haven't yielded any posts to this effect. Ideas anyone?
Dollar for dollar, a hooded vest added more warmth to my wetsuit than anything else.slingshot once bubbled... Has anyone tried doubling up on wetsuits for colder water diving? I've got a 5mm jumpsuit, and have been considering buying a 3mm (eg Henderson Hyperstretch) to put over it rather than buying a 7. Possible advantages: cheaper to buy, increased versatility? Possible disadvantages: less mobility, scorn of my diving buddies? My searches of these forums haven't yielded any posts to this effect. Ideas anyone?