Mini Pocket Spring Layer with Border Wire Steel Frame Individually Wrapped Coils for Sofa Cushion and Mattress Comfort Use Product Specifications Product Name Micro Pocket Spring Unit Material High Carbon Steel Wire Wire Diameter 1.0mm-1.6mm Head Diameter 3cm Middle Diameter 3cm Height 2cm-5cm Turns 4-7 Turns Coils Counts According to the demand of clients Zone 1/3/5/7 (Customized) Woven Fabric 65-100g/㎡ Or Can Be Customized Size Any Size Available Color White, Blue Or