Bought the Raider 20-litre backpack from Helikon-Tex here. Delivered quickly, the backpack is original. I've already managed to try it out in the rain while fetching water in the city with a friend. The rain cover worked perfectly, everything inside stayed dry. The straps get a bit wet since they’re on the outside, but that's to be expected. The back is very comfortable, fits me perfectly. I loaded it up properly, but the chest strap and waist belt really help – the backpack fits like a glove and the straps don’t slide around. The fittings are good too: everything feels quality, nice to the touch and works smoothly. The "beaver tail" is a great feature. I throw my jumper or mat there so I can sit on the ground, and the main compartment stays free. Turns out it fits a lot more in than you’d think. The side pockets for bottles are good too – the elastic holds them tightly. A small issue: there was a little spot on the pocket when I unpacked it, but it wiped off easily with a damp cloth, so now everything’s perfect. Overall, a classic backpack – 100% satisfied.