how to build a foam pit

{"cid":"91179890","title":"78M2 Gym Fitness Indoor Jump Park\/ Body Building Trampoline Park \/Popular Used in Amercian Indoor Trampoline","imgUrl":"https:\/\/img.chinax.com\/nimg\/0f\/e3\/d53968993e0260c377a19375e454-200x200-1.jpg","attrs":{"Price":"5000-10000USD","Brand Name":"78M2 Gym Fitness Indoor Jump Park Body Building Trampoline Park Popular Use Indoor Trampoline","Model Number":"5.LE.B2.511.242.01","Minimum Order Quantity":"1 set","Delivery Time":"15 -20 working days","Certification":"TUV","Place of Origin":"GUANGZHOU ,China","Payment Terms":"D\/A, D\/P, T\/T, Western Union","Supply Ability":"120 sets per month","Packaging Details":"cotton fabric & plastic film","Model No.":"5.LE.B2.511.242.01","Material":"Foam Pad,Springs.Jumping mat,galvanized steel pipes","Type":"indoor playground trampoline park equipment","Certificate":"ISO14001,ISO18000,ISO9001, license of special equipment","OEM":"Accepted ,Hot sale bouncer trampoline","ODM":"Accepted ,Hot sale bouncer trampoline","pad thickness":"5cm","Color":"multi color for section","Size":"11.75*6.7*3 M"}}

{"cid":"91187705","title":"Multi - Function Indoor Trampoline Equipment Commercial 700 Sqm Eco - Friendly","imgUrl":"https:\/\/img.chinax.com\/nimg\/cf\/ed\/87155b764177ac70ab18cf89c72e-200x200-1.jpg","attrs":{"Price":"USD$ 117000-126000 \/Set","Brand Name":"Huadong Play","Model Number":"HD18-203B","Minimum Order Quantity":"1 Set","Delivery Time":"15-20 days","Certification":"ISO9001-2008\/ISO14001\/3C\/SGS\/TUV GS\/ASTM","Place of Origin":"Wenzhou,Zhejiang,China","Payment Terms":"Western Union, L\/C, T\/T","Supply Ability":"1 Set per month","Packaging Details":"Bubble bag and PP film","Size":"52.4x14x3.7m \/ 172x46x12.1ft","Area":"over 700 sqm","Color":"Customized color","Material":"galvanized steel+spring+PVC+PP mat","Age":"over 3 years","Package Volume":"165 CBM","Capacity":"200-300","Max weight":"200KG\/sqm"}}