Welded rather than sewn seams are the only way to make 100% waterproof
backpacks.We WELD the seams of 210D nylon airline life vest fabric to create waterproof liners for our packs and panniers.
.These liners are then sewn into our packs using the welded tabs.
By using waterproof liners on the inside, we can give you more cycling specific features for your pack on the outside, like blinker mounts,pockets, pocket attachment points, compression straps and u-lock holsters. These liners also contain large welded velcro panels to attach padded laptop
The Coffee Tumbler pocket attaches to the side pocket attachment points on either side of the pack. It is adjustable on the sides and length to fit a variety of different coffee tumblers, up to the largest Starbucks makes. It fits quite snug in the pocket and is very stable on the pack. We venture to say it would probably would not fall out even if your pack fell off at speed.
It easily mounts to the side pocket attachment system on the side of every Velo Transit pack and the Metro 20 and Retro 20 panniers.
Been using this for many years to bring my coffee into work. I've used it on both my motorcycle & bicycle without any issues. I have a pair of them (one on each side). It's brilliant and works very well.