Size: your choice
Thickness: customized
Service: OEM/ODM
Top quilting:Quality polyester fabric+1cm 25#density foam.
Felt layer:1pcs of PK felt (500g/m3) for the top spring.
Bonnell spring:10cm (H),2.2mm wire guage, 6 turns.
Felt layer:1pcs of PK felt (500g/m3) for the bottom spring.
Bottom quilting:Quality polyester fabric+1cm 25#density foam.