600D Fabric: This heavy duty nylon resists wear and tear, and reduces the risk that sharp edges will cut through the fabric. It is also water resistant, to keep gear dry when inside.
Nylon shoulder strap: A 2 inch strap with length adjustment allows the user to carry this bag over the shoulder or even across the chest. It can also be detached for the minimalist approach.
Waterproof Lining: A coated nylon on the inside of the bag helps keep the melting snow and grime inside the bag instead of dirtying up the car or your nice clean ski jacket. This also helps keep the smell of stinky boots inside the bag. Just remember that you need to air out the boots at the end of the day, or else you'll end up with wet boots in the morning!
Bottom Reinforcement: Extra durable material at the bottom of the bag gives strength where its needed most, preventing gear from disappearing through holes and tears.