The back is flat ^_^ Because of the large size, they have a great presence even when placed in candy bags or shaker pouches＾＾ Resin cabochons, cameras, mixed colors Size: Width approx. 18.6mm, Length 25.4mm, Thickness 8.3mm. We also have superお得な大量個数 packs and cabochons perfect for kids, as well as kids' accessory parts such as earrings and rings, so please take a look at the product list ^_^ ★About Multiple Purchase Discount★ Also, we will give a 50 yen discount for each additional accessory part you purchase★ Due to the Mercari system, we cannot offer discounts after purchase, so if you want to apply the multiple purchase discount, please let us know the names of the products you want to buy in the comments ^_^ ★About Repeat Customer Bonus★ We offer a bonus to repeat customers who purchase a total of 800 yen or more. (This is different from this product and the contents vary depending on the time. Please check the details in the profile.) If applicable, we would appreciate it if you could comment to let us know you are a repeat customer ^_^ ★Must Read Notes★ ・Colors will be randomly selected, but we will combine them so that all colors are included. ・Because they are made overseas, there may be burrs, small scratches, printing misalignments, and distortions, and in particular, there may be resin depressions or bulges on the back, or the color may be protruding. ・We plan to ship by ※regular mail without bubble wrap and without compensation for loss or damage during shipping, so please understand. We can change to Yu-packet with compensation and anonymous delivery for an additional 120 yen, so please comment before purchasing. ・We can ship with bubble wrap and a packing box for an additional 150 yen, so please comment before purchasing. ※If the weight of the package exceeds 100g, we may automatically change to Yu-packet. (This change is free, but it will be shipped in an envelope instead of a box, and without bubble wrap. ★Viking 5 Eligible Products★ This is a great Viking deal where you can choose 5 parts for 366 yen or less for 1366 yen ^_^ If you want to participate in the Viking, please choose 5 items from the hashtag below and comment♫ #marshmallow_acc_バイキング