Sterling Imperial Hybrid Mattress — Pocket Coil + Latex or Memory Foam

The Sterling Imperial Series — Handcrafted Hybrid Mattress Built to Last 15–20 Years

The Sterling Imperial (models 620, 625, and 675) is a premium hybrid mattress engineered for sleepers who want lasting comfort, full customization, and a bed that never needs to be replaced on the industry's 8-year schedule. Built in the USA since 1987.

The Foundation: Foam-Encased Pocket Coil Core

At the heart of every Imperial mattress is a system of individually wrapped pocket coils — each coil sewn into its own fabric sleeve for independent response and near-zero motion transfer. The entire coil system is surrounded by a high-density foam encasement, eliminating border wires entirely. The result: a true edge-to-edge sleeping surface with no roll-off and full support from corner to corner.

Your Cover, Your Choice — The YKK Zipper System

Every Imperial mattress features a precision YKK matched zipper system that lets you choose, swap, or upgrade your comfort top at any time — in the store or in your home:

• Plush Top (Imperial 620): 2" zip-on cover — soft, cloud-like feel, ideal for side sleepers
• Pillow Top (Imperial 625): 3" zip-on cover — extra-plush cushioning for deep pressure relief
• Euro Gusset Upgrade (Imperial 675): Adds a 3" zippered compartment above the coil core — fill it with two 3" comfort layers of your choice, one per side of the bed

Euro Gusset Comfort Layer Options (Mix & Match Per Sleeper)

The 3" Euro Gusset compartment holds two comfort layers — one for each side of the bed. Choose any combination:

• 3" Soft Talalay Latex (18–22 ILD) — gentle pressure relief, responsive feel
• 3" Firm Talalay Latex (29–32 ILD) — deep spinal support, durable
• 3" Soft Memory Foam — contouring, motion-absorbing

The Euro Gusset compartment is then covered with either the Plush Top or Pillow Top zip-on cover. Buy it as a base Imperial 620 or 625 today and upgrade to the 675 Euro Gusset configuration at home, any time.

Built to Last — Replaceable by Design

Unlike conventional mattresses designed to be discarded every 8 years, every component of the Sterling Imperial is removable, cleanable, and replaceable:

• Zip-on covers can be spot cleaned, dry cleaned, or replaced entirely
• Comfort layers can be swapped to refresh feel or firmness over time
• Exterior sidewalls are replaceable if ever needed
• The mattress never needs to be flipped
• Designed for a 15–20 year lifespan — replace parts, not the whole bed

Certifications & Specs

• CertiPUR-US® certified foam — no ozone depleters, no heavy metals, low VOC
• Aloe vera-treated mattress tops — antibacterial and antimicrobial
• LEED certified (2 points: recycled content + sustainable design)
• Compatible with adjustable bed bases
• Mattress height: 12" | 20-year limited warranty

Bed Frame & Foundation Requirements

The Sterling Imperial requires full, flat support across the entire surface. If using a slatted frame, place a sheet of plywood or a bunkie board over the slats. Our wood foundations are an excellent alternative — contact us for details.