Kids' Neck Warmer & Arm Warmers Stylish and Cool! Great as an accent! Perfect for everyday wear, events, and Halloween costumes! The arm warmers have thumb holes! There is no size listed, but my child used them around 2-3 years old. They have been used only a few times, so they are in beautiful condition! The fabric is thin, so they are not suitable for mid-winter. Please refrain from purchasing if you are sensitive to items stored at home.