*Waterproof Ripstop 17.6 oz (500 gsm) Canvas *100% superior Cotton Canvas *Warm wool blend blanket lining *Ripstop Polyester grids provide extra fabric strength *Rope reinforced neckline on Rug *Full immersion Waxed waterproofing treatment process (not sprayed on) *3 way chest fitting allows versatile fitment. *Shoulder gussets and Rump darts *Matt black chest buckles and plated fittings. *Taffeta lined chest on rugand Tail flaps. *Removable Leg straps and Fleece wither protector. *Sewn on D rings on Rugs for hood & neck rug connection.The Eureka canvas rugs are sewn together using a quality waxed cotton thread. The rug must be hosed down before use so the waxed cotton thread will swell up and expand into all sewn areas enhancing the waterproof treatment. Ensure the rug is completely dry before storing it away in a ventilated area. It is recommended to apply a canvas re-proofing compound before the start of each new season.