The Arc'teryx Alpha FL 30 pack was created for climbers and alpinists who want a light, durable and highly weather resistant pack that is pared down to be as simple as possible. No extraneous straps or parts. To save weight and provide the climber with easy access to contents, the traditional top lid has been replaced with our RollTop closure and an external security pocket. The RollTop provides a weatherproof seal, extends the packs volume and when not needed tucks inside the pack for quicker access. External lash points can be used to attach tools, crampons, extra layers, helmets, sleeping pads, etc. Shoulder straps are soft edged and carry extremely comfortably with heavy or light loads. Ultralight and fast, highly weather resistant and alpine strong, the Alpha FL 30 is for built for climbers. An intense focus on the realities of moving fast on rock and ice led to this versatile, streamlined pack that combines leading edge fabric technologies, performance focused design and a confident simplicity.