Hockey Revolution Dryland Flooring Tiles - MY PUZZLE SYSTEMS 15 MY PUZZLE SYSTEMS 15 can be used by virtually any hockey player anywhere by placing it to any flat surface Package contains 15 dryland training tiles each 13"x13" Tiles are durable and high quality and is easily portable and can be used anywhere for off ice hockey training. Can be combined with other Hockey Revolution products Make interactive workout with HOCKEY REVOLUTION training app.