triplets are 3 skis you can rotate, my girlfriend, (who rips)Rides them, and has no complaints. The idea is an extra ski in case you destroy one, or just mix 'em up all the time to make them last. She mixes them up daily. They are a really good ski, and if you order the atomic bindings that go with them, (sold in 3's) There is a 2 year no questions asked warranty. That is a good idea my friend.