We waterfowl hunt on an averge of 60 days a season and I buy nothing but the Cabelas Super Mag 1800 grm Thinsulate 5mm Neoprene. I have a pair now 3 years old and they are leak free. I had a buddy dig around and research the LaCrosse and Cabelas brand and came to find they are the same boot, different name. Both get sent back to LaCrosse to be repaired or replaced. I always get mine the same size I wear for they are over sized for heavy pairs of socks and I wear a 12 and get a 12. Don't go a size smaller for they will be tight and won't stay warm in the really cold weather for you won't have the trapped air and then the room for extra socks as well. I wear mine in the boat for warmth also.