Merino 250. Great condition. non-smoking house. Dark heather grey. SW0SN111 Description Our Kids' Classic Thermal Merino Base Layer 1/4 Zip uses our super-soft midweight interlocking knit. This versatile 1/4 zip tee is great in cool conditions and when you need to stay warm. And when the sun comes out, just zip the collar down. With Smartwool® base layers, it's tha