Specs & Features

​Technical Specs

• ​Fabric Weight: 150 Lightweight / 130 Featherweight
• ​Material Composition: Merino Wool Blend (including TENCEL™ Lyocell for specialized Cool-Lite variants)
• ​Fit: Slim/Snug fit for low-bulk layering under helmets or hoods
• ​Weight: ~61 g (2.15 oz)
• ​Sizing: Unisex One Size (OS)

Key Features

• ​Thermo-Regulation: Naturally retains body heat when chilly and vents moisture when high-output activity picks up.
• ​Odor Resistance: Premium merino fibers naturally inhibit bacterial growth, allowing for multi-day use without washing.
• ​Low-Profile Seams: Flatlock or minimized stitching prevents chafing and pressure points during extended wear.
• ​Packable Design: Easily rolls down to the size of a energy gel pack to slide effortlessly into your pocket or pack.

Care Instructions

​To maximize the lifespan of your merino wool gear, follow these standard guidelines:

• ​Wash: Machine wash cold (30^\circ\text{C} or lower) on a gentle/wool cycle. Wash inside out with similar colors.
• ​Detergent: Use a mild or wool-specific detergent. Do not use fabric softeners (they coat the fibers and destroy moisture-wicking capabilities).
• ​Bleaching: Do not bleach.
• ​Drying: Do not tumble dry. Line dry in the shade.
• ​Ironing: Cool iron if needed. Do not iron prints or tags.

X-Boundaries Professional Tips

• ​The Perfect Liner: Because of its ultra-slim profile and excellent moisture management, this beanie shines as a low-bulk thermal liner under snowboarding, skiing, or cycling helmets.
• ​The Travel Essential: Thanks to merino's inherent odor resistance, this piece is a prime candidate for fast-packing or multi-day alpine travel. Hang it up to air out overnight, and it will be fresh and ready by morning without needing a wash cycle.
• ​Prevent Pilling: To protect the delicate knit construction from friction wear, avoid washing it alongside abrasive items like velcro, heavy zippers, or rough canvas gear. Safely tuck it inside a mesh laundry bag before tossing it into the machine.