Why We Like The Outdoor Research Alpine Onset Merino 150 Baselayer Bottom
The Alpine Onset Merino 150 Bottoms are our go-to base layer for cold-weather adventures, offering breathable warmth and moisture-wicking performance. Made from a soft, non-mulesed merino wool blend, these bottoms move with us while keeping us dry and comfortable during active pursuits. With flat-seam construction to prevent chafing and UPF 30 for added sun protection, they’re perfect for long days of hiking, climbing, or skiing in the backcountry.
Details
- Lightweight baselayer for active outdoor use
- Non-mulesed merino wool blend is breathable and soft
- Wicks moisture, dries quickly, and resists odors
- Flat-seam construction prevents chafing
- UPF 30 protection shields from harmful UV rays
- Elastic waistband ensures a comfortable fit
- Item #ODRZ91A
Tech Specs
- Material
- 53% merino wool, 42% polyester, 5% Lycra
- Insulation Weight
- lightweight (150gsm)
- Fit
- form-fitting
- Style
- tights
- Anti-Odor
- natural attribute of merino wool
- UPF Rating
- 30
- Claimed Weight
- 5.8oz
- Activity
- ski, snowboard
- Manufacturer Warranty
- limited lifetime













1. Your order is usually shipped out within 24-48 hours after your payment is received.
2. The tracking number of your parcel will be sent to you after your order is despatched. You may use the tracking number to check the status of your order online.
3. The shipping fee will be auto-added in the grand total when you send payment.