JHK Gel Memory Foam Mattress Topper - California King, 2" / 3" / 4" Thickness, Cooling, Pressure Relief

The JHK gel-infused memory foam mattress topper in California King. Available in 2", 3", and 4" thickness options to suit different comfort and support preferences. Slow rebound (viscoelastic) memory foam conforms to body shape and relieves pressure at the hips, shoulders, and lower back. Gel infusion draws heat away from the sleep surface and dissipates it through the foam body, reducing the heat retention that is the primary comfort issue with standard memory foam. Portable and self-contained - no installation required. 12.51kg.

Choosing Your Thickness

• 2" (50mm) - a 2-inch topper adds a moderate layer of memory foam over an existing mattress; suitable for mattresses that are in good condition but feel slightly too firm; the lower foam depth provides a subtler contouring effect and less pressure relief than thicker options, but adds less overall height to the sleep surface; suitable for sleepers who prefer a firmer feel with light cushioning
• 3" (75mm) - a 3-inch topper provides a mid-range foam depth that delivers meaningful body contouring and pressure point relief while adding a manageable amount of height to the mattress; a good balance for most sleepers looking to soften a firm mattress or extend the comfort of an older one without committing to the full depth of a 4-inch option
• 4" (100mm) - at 4 inches, the topper provides the greatest contouring depth of the three options; the additional foam volume allows the body to sink further into the topper before reaching the underlying mattress, increasing the degree of pressure redistribution at the hips and shoulders; most effective for sleepers with significant back, hip, or shoulder discomfort, or for refreshing a mattress that has lost substantial firmness and support

Key Features

• Gel-infused memory foam for heat dissipation - the gel infusion in the foam draws heat away from the sleep surface and disperses it through the foam body rather than allowing it to accumulate beneath the sleeper; this reduces the sleep-surface temperature rise that occurs with standard non-gel memory foam, which can cause discomfort and night sweats, particularly for warmer sleepers
• Slow rebound foam for pressure point relief - viscoelastic memory foam responds to body weight and warmth by conforming to the shape of the body; this distributes contact pressure across a larger surface area and reduces peak pressure at the hips, shoulders, and lower back - the primary pressure points for side and back sleepers; suitable for relieving back and hip pain during sleep
• California King format - California King is a longer and narrower format than standard King (72" x 84" vs 76" x 80"); suited to taller sleepers who benefit from the additional 4" of length, and to bedrooms where the room width is better suited to a narrower footprint
• Portable and self-contained - no installation required; place the topper on the mattress surface and it is ready for use; compresses for storage and transport when not in use

Suitable For

• California King mattresses requiring softening and pressure relief
• Back, hip, and shoulder pain relief during sleep
• Side, back, and stomach sleepers seeking pressure point relief
• Warmer sleepers requiring temperature regulation (gel infusion)
• Taller sleepers in California King beds

Specifications

Care Instructions

Do not machine wash the memory foam. Spot clean with a damp cloth and mild detergent. Air the topper in a well-ventilated space periodically. Allow the topper to fully expand for 24-48 hours after unpacking before use. Store flat or rolled in a cool, dry location when not in use.