Probably the best back pack you will ever buy. Made from a high density waterproof material, this back pack is designed for elite jiu-jitsu travellers. The Onyx back pack features an internal laptop/tablet sleeve, making it perfect for the jitsuka training straight from work or college. The rear features a lower lumbar support for extra comfort and a waist strap to balance the weight effectively. At the top rear of the bag is a small compartment designed for your BJJ belt, so its always where you need it, plus side pockets for those everyday essentials.