One of the most popular products in handmade market. Contain a hard PVC circle with rolling beads inside https://youtu.be/7ht2qQ9THbE \Materials\ 100% Cotton/Organic Cotton Plastic \Circle Size\ -Inner diameter about 4CM -outer diameter about 8.5CM *This product is handmade, and so slight variations in size are to be expected. Margin of error is approximately 1-2cm.* https://farm5.staticflickr.com/4334/35902881044_939ca5f8e3_k.jpg https://farm5.staticflickr.com/4395/36716305135_da2222715e_k.jpg https://farm5.staticflickr.com/4401/36547025162_cb750fbf1e_k.jpg https://c1.staticflickr.com/5/4260/35170104755_6880021c36_b.jpg -The shipping time depends on the logistics companies. Therefore, an exact date cannot be given. -Please allow for some variation in color between different devices and screens. Actual colors may vary.