Trail O-pants Jr TS0001833 It has a breathable mesh

It has a breathable mesh lining on the inside that insulates well

This Basic Mesh orienteering shirt is an airy and very comfortable short-sleeved crew neck shirt

The top is made from a breathable fabric

Same is the down filling

Trail O-pants Jr TS0001833 It has a breathable meshShort orienteering pants made using highly abrasion resistant and quick drying fabrics for best performance in the terrain. It has a back zip pocket and elastic waistband with a drawstring. This product has a tight fit. It will fit close to body, but not cling to it necessarily. There is freedom of movement and is a product that will fit most people.