Drake Waterfowl MST Big Main Eqwader Wading System features: MST Materials: 3.5mm Neoprene--800 gram Thinsulate Boot--HD2 (Hydro-Durance) Material on Front of legs--HD2 Material on Back of legs and on seat--HD2 Material covering boots--6 horizontal shell loops--Improved No Buckle Straps--2 Inch Webbing Adjustable Belt--Reinforced Knee Pads--Vertical Magnattach Call Pouch with Breathable Mesh Bottom--Vertical Security Pocket with Waterproof Zipper--Internal "High & Dry" Security Pocket with Waterproof Zipper--Fleece-Lined "Against the Body" Handwarmer--Large Front Cargo Pocket with Magnattach Closure--Adjustable Boot-Lok for Maximum Comfort and Stability.