Easily decorate-able arm bands with great colour choices. High visibility yellow and orange conform to ISO EN20471: 2013. Made of durable 300D waterproof bright colours fabric. Fitted with strong 10cm long adjustable Velcro fastening. Sold in packs of 20. Washing Instructions Maximum washing temperature 40 ºC. Normal process.Do not bleach. Do not iron. Do not tumble dry. Do not dry clean. No industrial laundering. 25 max. wash cyclye.