This is a perfect backpack for your hiking adventures. One of the materials used to make this bag is cotton and things you want to keep extra track of can go in the inner pocket.
From Amazon
Fjallraven Kaipak 38W Backpack - Redwood, 32 x 65 27 cm, 38 l
Cotswold Outdoor
Womens Kaipak 38 Rucksack
OnBuy
Fj?llr?ven Kaipak 38W Backpack - Redwood, 32 x 65 x 27 cm, 38 l