The Icebreaker Altitude Zip features everything you could possibly want from an active base layer - it's slim fitting, is amazingly warm, has superb breathability and has a high zip collar that can be worn three ways to keep out the wind.
- Fits close to body
- No shoulder or back seams for enhanced comfort and an even better fit
- Contrast colour underarm gusset forms forward side seams
- Drop tail
- High (9.5 cm) zip collar can be worn three ways