Worn correctly, these elasticized wrist bands will control nausea due to sea sickness, inner ear imbalances, morning sickness and chemotherapy. One size fits most wrists. Wrist bands can be washed using mild soap or detergent. One pair per pack. Band size: 2 x 13/16" stretching up to 4 1/2". PICTURED IN WHITE BUT ONLY BLACK IS AVAILABLE.