Montbell Backpack Alpine Pack 60L Waterproof Outdoor Travel Trekking (Unisex)Product Description The birth of Monthbell's waterproof trekking pack. The combination of the waterproof inner Bags and roll up closure effectively prevents water penetration. Without a top lid, the roll up closure also allows for quick access to your pack's contents. Ushering in a new generation of Backpacks. This model provides excellent stability while maintaining a slim silhouette. Won't hinder your movement for smooth trekking even through narrow