The Patagonia 35L Ascensionist Pack is built to meet the demands of elite alpinism using recycled materials, durable webbings, and a TPU finish, all in a lightweight design. The body fabric, hip belt, and shoulder straps include a durable water repellent finish made without intentionally added PFAS. A removable waistbelt, waistbelt padding, and frame offer the option to reduce bulk when needed, and the glove-friendly top-cinch closure ensures easy access. Multiple lash points across the face, side panels, and top provide ample space for securing extra gear. A full-sized top pocket keeps essentials within reach, even when the pack is fully loaded. Adjustable, removable ice-tool carry straps are designed for modern tools and can be repaired in the field for added reliability.