【Durable Material】 Made of nylon, which is highly abrasion-resistant and can withstand long-term use. 【Multi-functional Design】 Features an external pocket for quick access to essential items. The interior has mesh pockets for convenient organization of small items. 【Comfortable Fit】 Adjustable shoulder straps allow for a comfortable fit to the body, even during extended use. Thank you for viewing. I have used this for several months. As shown in images 7 and later, two locations of the cross-straps are damaged, but repair is likely possible. The damage in the lower right of image 7 has been temporarily repaired with hand stitching. Other than that, I don't see any significant stains. It has been washed, so there is no odor.