If you were familiar with the former Prolighter 30+10 backpack, here is a completely revised version by Millet, according to users’ feedbacks to improve this product and make it lighter in the process. While it is ideal for ski touring and mountaineering, mountain enthusiasts will also use it for climbing. Praised for its durability, it benefits from a waterproof design, with a capacity that can be extended from 30 to 40 litres. The main compartment and various pockets offer enough room to organise the required equipment. The inside of the backpack being easy to access from the top and allowing to install a water bladder.   The Millet Prolighter 30+10 features a side ski carrying system. Ice axes, trekking poles are attached to the front, while a rope can be sturdily attached on the top and sides. To save a bit of weight if need be, note that the chest strap, hip belt and top lid are both removable. Also note that this backpack features handles to easily manipulate it, but also to hoist it vertically along a wall.   Characteristics: Capacity: 30+10Main material: Nylon 210D Honeycomb Robic (100 % polyamide)Other material: Nylon 1000D (100 % polyamide)Lining: Polyester 250D Oxford Lining (100 % recycled polyester)Waterproofness: 1000 mmDWR PFC free durable water repellent finish  Side ski holderGear holder: ice axe, poles, ropes, etcRemovable top lid constituted of 2 zip pocketsHydration system compartment (bladder not included)Adjustable shoulder strapsAdjustable chest strap and removable hip beltLoad liftersCompressions strapsDimensions (H x L x D): 64 x 30 x 23 cmBack length: 46 cmWeight: 1000 g Backpack Millet ---Prolighter 30+10 W Indian