Mountainsmith K9 Dog Pack – Vet-Approved, Pannier Saddle Bag

Let Your Dog Carry Their Own Weight — Literally.

The Mountainsmith K9 Dog Pack is the result of 40+ years of dog pack innovation from one of the original pioneers of the category. Designed with and approved by a local veterinarian in Golden, Colorado, the K9 Pack delivers a custom, comfortable fit across small, medium, and large breeds — so your dog can carry their own gear on hikes, camping trips, and backcountry adventures.

Every Mountainsmith product is backed by the Forged for Life Guarantee — the official Mountainsmith lifetime warranty.

Key Features

• Vet-Approved Fit System — ergonomically tapered, dog-friendly torso shape designed with veterinarian input for healthy, comfortable carry
• 4-Point Adjustable Chest Harness — padded sternum pad and independently adjustable back harness deliver a precise, secure fit for dogs between sizes
• Dual Pannier Compartments — two side saddlebag compartments with zippered accessory pockets give your dog plenty of room for essentials
• Adjustable Belly Strap — keeps the pack stable and centered during active movement on trail
• Metal D-Ring Leash Attachment — attach your leash directly to the harness for full control on the trail
• Padded Grab Handle — lift your dog over obstacles or keep them close when needed
• Reflective Trim — front, rear, and side reflective detailing for visibility in low-light conditions
• Mesh Panels & Perforated EVA Foam — breathable construction keeps your dog cool during long hikes in warm weather
• Water-Resistant Interior Coating — protects gear from rain, shallow crossings, and muddy conditions
• K9 Bed Compatible — Large and Medium sizes fit the Mountainsmith K9 Bed for added backcountry comfort

Size Guide (Measure Widest Part of Chest)

• Small: 20–30" chest — 3L per pannier, 9.5" x 8.25" x 2.25", 16oz
• Medium: 24–40" chest — 5L per pannier, 12.25" x 8.25" x 3", 1lb 3oz
• Large: 32–44" chest — 9L per pannier, 13.5" x 9.5" x 3.25", 1lb 7oz

Between sizes? Size up.

Because the best adventures are shared ones — and your dog should pull their weight.