These gloves, although not very thick, provide a lot of warmth. A lot of divers in Ontario use them.
Fox River Mid Weight Ragg Gloves (Unisex) - Mountain Equipment Co-op. Free Shipping Available
I find them warm enough for water temperatures in the low 30's.
For underwear I have Fourth Element Arctics and use MEC Expedition weight underwear underneath. Together with a moderate amount of bioprene I find this enough for 40-50 mins in sub 40 degree water.
Fox River Mid Weight Ragg Gloves (Unisex) - Mountain Equipment Co-op. Free Shipping Available
I find them warm enough for water temperatures in the low 30's.
For underwear I have Fourth Element Arctics and use MEC Expedition weight underwear underneath. Together with a moderate amount of bioprene I find this enough for 40-50 mins in sub 40 degree water.