Every girl has mermaid princess dream. The best birthday gift for little girl who have a mermaid dream that can make her dream come true! Mermaid Tail Set is very cute and beautiful, perfect for 1. Mermaid theme pool party ; 2. Summer swimming and surfing ; 3.Take photos on beach holiday ; 4. Winter enjoying a hot spring or a sauna; 5. Birthday , Halloween, and Christmas Party. Package list : 1* Mermaid Tail + 1* Bra + 1* Shorts + 1*Monofin+1*Headwear+1*Goggle+1*Necklace(7PCS total ) size details: plz check before ordering:(cm) you could choose the size according to your kids height,for example,if your kids is 131-140 cm tall, then you could choose 10T--140 size. Tail Length Tail Hip Recommend height 4T(110): 100cm/39.4" 54cm/21.2" 100-110cm Tall 6T(120): 105cm/41.3" 56cm/22" 111-120cm Tall 8T(130): 110cm/43.3" 58cm/22.8" 121-130cm Tall 10T(140): 115cm/45.3" 60cm/23.6" 131-140cm Tall 12T(150): 120cm/47.2" 62cm/24.4" 141-150cm Tall Swimmable If put a Monofin in the tail. Walkable because at the bottom of the mermaid tail is hollow out.