The Dog Pack SL has been discontinued. If you're looking for something new, check out the best dog packs for 2020.
Altrec Outdoors says:
If your dog is a fast-packer, then the Mountain Smith Dog Pack SL is the perfect choice. With an ergonomic suspension system and profile, these packs move when your dog moves; go where your dog goes. Waterproof zippers, mesh wet item storage area and reflective piping make the perfect pack for your best friend.
Historic Range: $39.00-$64.95