Features of the Mammut Nirvana 25 Pack High-Density, 2-layer EVA back padding Hip belt Shoulder straps with stretch fabric cover Front pocket for avalanche safety equipment Attachments for ice tool and walking sticks Full rear zipper access to the main compartment SnowBoard carrier Goggle compartment SOS label with emergency instructions Ski carrier Hydration system-compatible Recycled main material Fabric Details 100% Polyester