There are 2 sizes in This Summit Backpack is 60 Liters on this page other one is 40 Liters.
Bag is made of 100% nylon inside and outside with rope adjustments all around and this is very durable backpack to survive and counter the tough weather and tracks. There is luggage access from top and bottom, backpack is applied with Branded zippers and is completely waterproof. In 60 liter varient the Shoulder straps heigh is also adjustable which users can manage for balancing their back before travel. Metal Wire is inserted at very backside to shape backpack even if fully loaded with gear and avoid causing travel problem. Inside the bag you find one elastic pocket to store your water hydration pack (not sold by us) which pipe can easily come though top hole and user can drink water while hiking or treking. Also inside the bag there is a wall which separates top and bottom user essantials by 30 to 70 split, and when not in use you can simply un-button the wall and easily consume 100 percent space without splitting.