Trail O-pants Jr Size:150 The back Lycra panel has

The back Lycra panel has a lightly brushed lining to provide good ventilation and high freedom of movement

breathable and elastic materials

Apart from that

There are also ventilating panels at the sides which provide extra ventilation

and all the zippers are from YKK

Trail O-pants Jr Size:150 The back Lycra panel hasShort 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.