I used these on my very first snowboarding trip. I bought these and immediately thought I should have just returned them thinking they were just extra equipment, and I could use my pair of Under Armour sweats under my snow pants. It's a good thing I kept them though, because they turned out to be a great buy. My snow pants were a cheap pair I bought that were insulated but were the same water proof material on the inside as the outside. I used these so my legs wouldn't stick to my snow pants and they did the trick. They're lightweight but kept me dry and warm the whole day! Definitely worth the purchase and am happy I kept them.