Gama Family Word Learning Unisex Children Socks - Teach Compound Word Butterfly 76% Cotton/14% Polyester/9% Nylon/1% Spandex Imported Hand wash cold. Do not bleach. Do not tumble dry. Do not iron. Do not dry clean. Do not use softeners. Free Exclusive App Included -- Complete compound word learning with our interactive app! It's free to download on either iPad, iPhone, Android or Kindle Fire devices. Search "Compound Words with Gama". Works as Educational Tool -- A great way to teach your child with pictures and words on socks. Teach word Star/Fish/Starfish. Each sock has a word and illustration printed on it. Match them up to reveal the correct compound word and complete the image. Learn Left and Right -- Your child will learn and know which one goes on the right and which one goes on the left. When he/she does it right, the compound word picture will show. Kid-Friendly Colorful Fashion Short Crew Designs -- All of our socks feature lively and easily recognizable kid-friendly designs. Comfortable -- Our socks are made out of a breathable cotton and nylon blend for all day comfort! They can also stretch higher up for upcoming cold weather.