Mermaid Tail for Swimming Girls Swimsuit Princess Bikini Set Bathing Suit Swimmable Costume Halloween Gift Children Cosplay KidsSize Information:The fabric is high elasticity, you can select the size according the kids height.for example, if your kid is 131-140cm height , you can select 140 Size110 Recommended Height:100-110cmRecommended age:3-4 Years120 Recommended Height:111-120cmRecommended age: 5-6 Years130 Recommended Height:121-130cmRecommended age:7-8 Years140 Recommended Height:131-140cmRecommended age: 9-10 Years150 Recommended Height:141-155cmRecommended age: 10-12 YearsSizeTail LengthTail WaistTail HipRecommended Height110100cm / 39.4"42cm / 16.5"54cm / 21.2"100-110cm / 39.4"-43.3"120105cm / 41.3"46cm / 18.1"56cm / 22"111-120cm / 43.7"-47.2"130110cm / 43.3"48cm / 18.9"58cm / 22.8"121-130cm / 47.6"-51.2"140115cm / 45.3"50cm / 19.7"60cm / 23.6"131-140cm / 51.6"-55.1"150120cm / 47.2"52cm / 20.5"62cm / 24.4"141-155cm / 55.5"-61"