Small: 24 x 50 x 60 cm / Large: 30 x 100 x 120 cm Material: Strong and lightweight 420D Polyester with PU coating Built in floats in top and weights in bottom Opens automatically when it hits the water High quality webbing with high viz. yellow dumb strap for easy retrieval Adjustable hole to increase or decrease water flow Lightweight and fast dry, easy to stow away