Cotton Booty Cloth Diaper Mystery Box. Cotton Booty is a monthly cloth diaper mystery box subscription service. Depending on the box you choose, each month you will receive one (1) name brand cloth diaper OR one (1) name brand cloth diaper and MORE! It’s like getting a present every month in your mailbox! We will ship you the latest styles that are top rated by moms around the world. You can customize your box based on gender, quantity, and frequency. We typically provide diapers that are “one size” or cover a similar weight range. . Shipping is always free within the United States. . We select and ship the top products on the market, so each month is an adventure and exciting!.