Patagonia Ascensionist 35L Reviews Trailspace Patagonia Ascensionist 35L Patagonia Ascensionist 35L Backpack Hike & Camp Patagonia Ascensionist 35L Backpack Hike & Camp. More functional than ever, the Ascensionist Pack 35L is the Goldilocks of alpine climbing packs big enough to get you into the mountains, yet small enough to climb with. Material Body: 5. 8 oz 420 denier 100% recycled nylon ripstop. Collar: 2. 2 oz 70 denier 100% nylon ripstop with a silicone coating. Lining: 3 oz 200 denier 100% recycled polyester. Body, collar and lining fabrics have a PU coating for durability and water protection. Body fabric is certified as bluesign approved Volume 2319 in Size 25. 5 x 12 x 5. 5 inches Details Dual spindrift closure allows the pack to expand or collapse, depending on the load Internal hanging pocket keeps essentials organized and easily accessible Adjustable ice axe carry can handle most axe shapes Adjustable, removable sternum strap Modular, removable compression straps provide maximum gear carrying versatility Removable framesheet and hip belt pads make the pack even lighter for the final summit bid Three point, over the top rope carrying system can be removed to further streamline the load; pack volume is 35 liters Weight 890 g (31. 39 oz)