Herschel Retreat Backpack 19.5L19.5Â litre, Laptop Backpacks, Backpacks for Men, Backpacks for Women, School Backpacks, Kids Backpacks, Pocket for mobile phone, Hip strap, Hydration system compatible, Black, White, Silver, Grey, Turquoise, Brown, Blue, Red, Yellow, Orange, Green, Beige, Pink, Purple, Khaki, Bronze