FUNCTION-FIRST DESIGN
One of the industry’s first lumbar packs, the Day is known for its function-first design. After 40+ years in the Mountainsmith line, they’ve revamped this classic built with Delta Wing Compression and added more functionality for efficient storage on and off trail.
FEATURES OF THE MOUNTAINSMITH DAY LUMBAR PACK
- Tuck-away waistbelt with forward pull adjustment webbing
- Front stash pocket with elastic cord compression
- Strapette compatible (sold separately)
- Interior foam padded sleeve for tablet carry
- Smartphone compatible waistbelt pockets (Fits plus sized phones)
- FreeFlow ridged EVA backpanel padding
- Backpanel stash pocket ideal for securing passport, boarding pass, etc.
- Delta Wing Compression System load adjustment
- Side reinforced bottle pockets (fits up to 32oz/1L)
- Inner SanctumTM interior zippered compartment for small valuables
- Bright yellow liner promotes visibility
- Zippered front panel pocket with key clip
- Bottom panel compression straps
- Removable 1.5” shoulder strap
- Headphone port
- Waistbelt Fit: 28” – 48”
























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