How long do bamboo base layers typically last?

With proper care (cold wash, flat dry, gentle detergent), bamboo base layers typically last 1–2 seasons of regular ski use (30–50 days per season). This is significantly shorter than synthetics (3–5 seasons) or merino wool (2–4 seasons). The weak point is fiber durability—bamboo viscose is inherently less strong than wool or synthetic fibers, especially when wet. You'll notice thinning at high-friction areas (inner thighs, underarms, seat) and pilling across the fabric surface. Extending life requires careful washing, avoiding machine drying entirely, and rotating between multiple pairs to reduce per-garment wear.