BN3TH’s North Shore Liner Bibshort combines BN3TH’s well-known underwear technologies with features tailored specifically for the saddle. Introduced in early 2023, this $130 liner bib swaps a conventional waistband for lightweight elastic shoulder straps and a highly breathable mesh back panel, ensuring unobtrusive support even when riding aggressively through technical terrain. Designed to be worn underneath baggy or tight-fitting shorts, it provides the foundation for a chafe-free, secure ride without the bulk of a full bib short.
I wear liner bib shorts for errands or commuter rides like on the Tern Orox.
Key Technologies: MyPakage 3D Pouch & STS Pad
- BN3TH’s signature 3-dimensional pouch lifts and separates with anatomically contoured support—think of it as a lightweight “bra” for your package. Unlike flat or unstructured liners, this pouch provides constant lift, minimizing friction and pressure points over long miles.
- The Sea-to-Sky (STS) pad is built from M3 foam (30 kPa density) at a targeted 12 mm thickness. The STS Pad features a central channel to enhance blood flow and reduce numbness during extended rides. Edge zones taper to 3 mm (20 kPa), creating a “shelf” effect that stabilizes you in the saddle without excess bulk.
Fabric & Construction
- Performance Blend: The chamois short body is crafted from a blend of 78 % polyester, 14 % spandex, and 8 % Ionic+ polyester (permanent silver anti-odor treatment). This combination delivers moisture-wicking, four-way stretch, and long-lasting odor control that won’t wash out over time.
- Seamless Comfort: Strategic flatlock stitching ensures every seam lies flush against the skin, eliminating hotspots. Inner-cuff silicone grippers prevent ride-up without squeezing, while the mesh back panel maximizes airflow wherever you sweat most.
Fit & Sizing
The North Shore Liner Bibshort has a 9.5″ inseam and a “secure-feeling” second-skin fit. If you straddle between sizes, BN3TH recommends sizing up for a relaxed fit or down for a more compressive feel. The absence of a waistband means no mid-ride pinching and the elastic straps glide effortlessly under jerseys or over casual tees.
Ride Experience & Performance
Riders consistently praise how the MyPakage pouch and STS Pad work in harmony to neutralize the jostling common on rough singletrack, translating into less fatigue and more confidence to push on technical climbs and descents. The liner’s low-profile design disappears under baggies yet performs just as well under tighter kit—making it equally at home on road, gravel, or mountain bikes.
Conclusion
For cyclists seeking a no-nonsense, high-performance liner engineered for trail-blazing and long road rides, the BN3TH North Shore Liner Bibshort delivers. It has fit, fabric, and function. The patent-pending pouch and pad technologies set it apart from competitors. The streamlined construction keeps you focused on the ride—not your pad slipping around. Whether layering under baggies or pairing under skin-suit tight shorts, this liner bib is a good choice.
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