Brodin's eco-clear bag is made from a soft, environmentally friendly plastic. It made from a material similar that used for baby bottle nipples and IV bottles. It contains no polyvinyl chloride and will not yellow or harden with age. These bags are made with our proprietary eco-clear material. Made in the USA. The Medium fits all Stealth, Gallatin and Cutthroat models. Circumference of 39". The Small Fits frames with 34" circumference and 10" deep. Net frames not included.