Bombtwill Alphacore Geojak

Hardcore yet secretly soft. The magic of the Bombtwill is twisted in the yarns. Hundreds of tiny nylon 6,6 filaments are air-texturized and spun together into each yarn. Each filament is slightly larger than one denier and the air-texturization crimps the yarns giving them a cotton-like spring and lingerie grade softness. But because hundreds of these filaments are twisted into each yarn the result is thick heavy-duty nylon yarn that's overspec'd for everyday wear. More technically the warp yarns use 200 and change filaments while the weft yarns use 300 and change which are also spun around an elastane core, but who is counting? The important thing is the elegant twisting of the soft into the strong.

The weave itself is quite straightforward, a simple 2x1 twill clocking at 360gsm (10.5oz) and treated with a fluorocarbon free (F0/C0) Zelan R3 DWR. The result is a rugged but relatively lightweight fabric that stays clean, dries quickly and has a whole lot of stay-off-the-body structure. In other words it behaves a lot like denim, but is both lighter and more durable.

Alpha 120 is a modestly heavy insulation characterized by its extreme breathability, an absolute essential when trying to create warmth without overheating. Designed by Polartec for US Special Forces to use in cold wet conditions, it is a knit insulation created by splicing a spacer mesh into two faces. The result is a particular combination of warmth and openness but most importantly it is a non-migrating insulation, which means it can be paired with far more open face and lining fabrics than most traditional insulations.

A simple 170 gsm, 17.5 micron top-capped, nylon-core, merino jersey. 89% Australian Responsible Wool Standard (RWS) merino and 11% nylon hidden in the core of the yarns for added durability.