100% silicone wristband (latex free). Black with debossed white writing. This is a hidden message wristband, so the outside of the band has the Caduceus medical symbol. The inside of the wristband says “Spinal Cord Stimulator”, which is only visible when turned over.Flexible and washable, it is perfect for sports, running or school. Unisex.Approx 12mm or 0.5″ wide. Adult sized (approx 8 inches or 202mm round).Sizing tips – The most important factor in choosing the right size is the measurement around the widest part of your hand – as it needs to slip on and off over your hand. Although there is a little bit of stretch in the band, if you pull or tug on it too hard, or stretch it too far over your hand, it could break. This wristband is approx 202 mm or 8 inches – ideal for someone who measures up to 215 mm around the widest part of their hand. Would suit an adult (approx age 14+), although it is not appropriate if you have particularly large hands.