Burton x FRAGMENT [ak] GORE-TEX® 3L PRO Acamar 2027 – Shell Bib

The Burton x FRAGMENT [ak] Acamar Bib is guide-tier outerwear for riders who operate at the intersection of serious mountain performance and understated style. Designed with Hiroshi Fujiwara of FRAGMENT — a designer with over three decades of snowboard experience — this bib is built for machine-accessed backcountry terrain: heli-drops, snowmobile approaches, and deep-day missions with no easy exit.

The shell is built around a GORE-TEX® 3L PRO membrane, the brand's most durable and breathable waterproof construction, guaranteed to keep you dry under sustained, high-output conditions. A stretch-woven bib upper and articulated regular-fit patterning (Kinetic Garment Construction) give you a full range of motion without bulk. Crossflow thigh vents manage heat on the skin track or the skin track equivalent of a heli-approach. Reinforced kick panels and triple-needle stitching protect high-wear zones. The zippered drop-seat, beacon-friendly power mesh thigh pockets, and a RECCO® reflector round out a feature set built around actual guide work.

Who it's for

Riders who access backcountry terrain by snowmobile, helicopter, or long approaches and need outerwear that keeps pace across all of it. The FRAGMENT stealth aesthetic — a muted colorway with subtle branding — means it transitions from the ridge to the city without looking like kit. If you want Burton's highest-performing bib with a design pedigree that actually earns the premium, this is it.

FAQ

• Is the GORE-TEX® 3L PRO membrane fully taped? GORE-TEX® PRO 3L construction is fully seam-sealed for complete waterproof protection — confirmed by GORE-TEX's GUARANTEED TO KEEP YOU DRY™ standard.
• What's the difference between this and the standard [ak] Acamar Bib? The technical foundation is the same guide-level [ak] Acamar platform; this FRAGMENT edition adds Hiroshi Fujiwara's stealth-focused colorway and refined FRAGMENT detailing.