【Thickening of all trampoline iron pipes】 We thickened each iron pipe for children's trampoline. The current tube wall thickness is 1.88 mm, which is half thicker than ordinary trampoline iron pipes, ensuring that children are safer from all aspects. 【Enhanced spring performance】 We enhance the characteristics of each spring. Each spring is now 1.8 x 86.43 mm, which is one -third stronger than ordinary trampoline. Children's indoor trampoline can increase the elasticity of the entire trampoline and ensure the safety of the child. 【Guarantee children's safety】 Bluerise trumpet trampoline has a TUV professional quality inspection certificate to provide children with a safe trampoline experience. 【Increase the height of the protection bar】 The height of the trampoline is 47.5 inches, which increases the height of children's jumps, ensuring safety and widening the activity area. 【100% satisfaction guarantee】 If you have any questions about outdoor trampoline or are not satisfied with the product, please contact us at any time, we will provide you with the best solution. Your satisfaction is our primary attention.