(1) coil height :8-30cm (2) Turns:4-9 turns (3) Wire Dia :1.0-2.4mm (4) Border Dia :5.0mm (5)Helical Dia:1.4mm (6) Size: all size according to acustomer`srequirement (7) The inner mattress spring is stainless and flexible after heated treatment. (8)Compressedpacking:16-25pcs/crt 1. Let body shape and mattess contact perfectly, It is good for protecting the skeletal. 2. Automatic balance and regulate pressure, promote the blood circulation. 3. When human impact on the mattress, it will automatically generated, saving energy consumption springback booster, prolong the period of human impact. 4. To prevent human waist and knees in the up and down movement, avoid friction trauma sciatic neurosis. 5. To promote human body in the application of physical and emotional function, achieve the highest realm. 6. Reduce the bodys resistance by 50% for easily. 7. Make sure the mattresss internal air circulation, maintain clean and sanitation. 8. Eliminate the body's metabolism and peculiar smell. 9. Luxurious imported brocade, fabric wear comfortable. 10. For the special recommentation of the international sleeping center, its the best for the 35-50 people using.