Package Dimensions: 9.25 x 8.35 x 2.17 inches; Weight: 9.59 ounces. Item model number: HQDFBA-3PC-COM01-110. Suitable for girls. Available since July 13, 2023. Manufacturer: DNFUN. ASIN: B0CBRDL51W. Warning: Mermaid tails or monofins can significantly impede swimming ability and should only be used by skilled swimmers under constant adult supervision, regardless of their swimming skills. SAFETY PRECAUTIONS: For water use, only suitable for experienced swimmers aged 3 and older. This is not a flotation device and requires adult supervision. Sizing: 3-4T fits heights 100-110cm, 5-6Y fits heights 110-120cm, 7-8Y fits heights 120-130cm, 9-10Y fits heights 130-140cm, and 10-13Y fits heights 140-150cm. Material: The mermaid tail is made of a soft, comfortable, elastic fabric blend of polyester and spandex. Avoid sharp surfaces and opt for hand washing and air drying. Occasion: A mermaid tail is a dream for many little girls, perfect as a gift for various occasions, cosplay, and parties. Don't forget to capture those beautiful moments! Style: Our product designs are updated yearly, with a focus on enhancing durability. For any questions or concerns, please reach out to us before or after your purchase.