Our new AK Joggers are made of 67% bamboo viscose and 33% organic cotton. Made from the safest materials, all AK joggers are OKEO-TEX certified.OEKO-TEX Standard 100 ensures that textiles are free from harmful levels of over 100 substances known to be harmful to human health, such as heavy metals, pesticides, and carcinogens. This reduces the risk of skin irritation, allergies, and other health issues.They are meant to be a fitted jogger. If unsure I recommend sizing up. Functional pockets + drawstrings. Original AK Clothing Co. side tag.