A stretch fleece for mid layer use, or as is - made of reliable and durable Polartec Power Stretch.
The Olden is right at home used as is or under a jacket. More dense and stretchy than regular fleece, Power Stretch has been a firm favourite for many outdoorspeople for years. It dries fast and transfers moisture well.
Flat lock seams for less risk of chafing
Thumb holes at the cuffs
Zippered hand pockets