Special design for pocket spring unit - A/B system

Special design for pocket spring unit - A/B system
Content:
Massage A/B System
Magical massage design!
The whole structure is composed by two kinds of pockets ,A&B. High pockets are alternated by low pockets, and soft coils are alternated by firm comils.Difference of the height and bounce create fantastic massage effect,which promote your blood circulation and release all your anxiety.