Spring casing made of steel wire with 1.8mm diameter and barrel shape, individually wrapped in NT fabric with a height of 9 cm. By having the largest variety of pocket spring shells, the products in this line guarantee a rest adapted to the taste and needs of each person. THANKS TO HAVING THE GREATEST VARIETY OF POCKET SPRING CASINGS, THE PRODUCTS OF THIS LINE GUARANTEE A SLEEP ADAPTED TO EVERYONE'S TASTE AND NEEDS.