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The 6621 softside waterbed bladder is our mid-fill bladder and features two layers of lumbar support, the Tethered Wave Control System and Sterling's Endura III PVC.
This bladder is a suitable replacement for the Sterling Santa Monica waterbed.
||Tethered Wave Control System
||2 full layers of 1.5 oz. Fiber
2 layers of lumbar support
||Made in U.S.A.
||Premium 20 mil Endura III Vinyl, MED Blue
(Vinyl colors may vary and do not change the wave control system.)
||4 year Full Warranty; 16 Year Prorated Warranty
Sterling Waterbed Warranty