Finding a mattress that fits a 28″ x 75″ footprint across RVs, bunk beds, and compact living spaces requires options that blend support, pressure relief, and durability. The following selections focus on 28 by 75 configurations with gel memory foam, high-density foam, or hybrid constructions. Each product is designed for travel, trailers, and narrow sleep setups, offering CertiPUR-US or similar certifications for safety and quality. Use this guide to compare thickness, density, and long-term comfort to pick the right fit for your vehicle or compact bedroom.
| Product | Brand | Size | Type | Certifications |
|---|---|---|---|---|
| FoamRush 6-Inch Bunk | FoamRush | 28″ x 75″ | High-density foam mattress | CertiPUR-US |
| FoamTouch 6″ Camper/RV | FoamTouch | 28″ x 75″ | Gel memory foam over high-density base | Made in USA, 3lb gel foam |
| FoamRush 3-Inch Bunk | FoamRush | 28″ x 75″ | High-density foam topper style | CertiPUR-US |
| FoamRush 5-Inch Bunk | FoamRush | 28″ x 75″ | Gel memory foam layer / high-density base | CertiPUR-US |
| ZINUS 6 Inch Narrow Twin | Zinus | 75″ x 30″ | Hybrid with innerspring and foam | CertiPUR-US |
FoamRush 6-Inch Bunk Mattress

The FoamRush 6-Inch Bunk mattress uses a high-density foam core designed for heavy use. Features include a density of 1.8 and ILD of 44 with durable recovery. The mattress targets RVs, campers, and travel trailers, providing firm support with pressure relief. It is CertiPUR-US certified for quality and safety and is intended for long-lasting performance, with expected life around 7–12 years. The product is sold as a coverless version, suitable for custom covers or direct use in a compatible bunk setup.
FoamTouch 6″ Gel Memory Foam RV Mattress

FoamTouch offers a 6-inch mattress with a 1-inch gel-infused memory foam layer atop a 5-inch high-density base. The gel layer enhances contouring and temperature regulation, while the dense base provides durable back support and prevents sagging. Made in the USA, the foam is designed to maintain shape for 7–10 years, delivering long-term value for travel trailers, bunk beds, or guest RV beds. The product emphasizes body alignment and pressure relief across the 28″ x 75″ footprint.
FoamRush 3-Inch Bunk High Density

This 3-inch high-density foam product focuses on compact, lightweight comfort suitable as a sleeper topper or base for tight spaces. With a density around 1.8 and 44 ILD, it offers recovery durability while remaining versatile for RVs and travel setups. The foam is CertiPUR-US certified and designed for a long service life in high-traffic areas, including boats, campers, and cargo trailers. Its versatility supports various configurations and easy customization for DIY projects.
FoamRush 5-Inch Bunk Gel Memory Foam

The 5-inch FoamRush bunk mattress combines a gel memory foam top layer with a supportive base cushion. It is designed for RVs and travel trailers, offering medium-firm support and pressure relief. CertiPUR-US certification confirms safety and quality. The product emphasizes suitability for various projects beyond sleeping, including upholstery and DIY foam crafts. Typical durability aligns with 7–12 years of use, depending on load and frequency of use.
ZINUS 6 Inch Narrow Twin Hybrid Mattress

This Zinus model measures 75″ x 30″ and is designed for compact spaces such as bunk beds and RVs. It features a hybrid construction with heavy-gauge steel coils for dependable support, complemented by foam layers for comfort. The mattress ships in a smaller box to reduce environmental impact. It includes CertiPUR-US certified foams, providing balanced support and zoned pressure relief for a better night’s sleep in tight spaces.
FoamRush 6-Inch Bunk High Density (Alternative)

An alternative 6-inch FoamRush bunk mattress emphasizes high-density foam with 44 ILD and 1.8 density. It delivers a stable, supportive surface for RVs, camp trailers, or narrow bedrooms. The foam is CertiPUR-US certified, underscoring safety and quality. This option suits users who want a robust base with a comfortable top layer, suitable for long-haul travel and frequent use in compact spaces.
Buying Guide: Key Purchase Considerations
- Fit and footprint: Confirm the exact 28″ x 75″ or 30″ width when comparing to your frame. Narrow dimensions improve compatibility with bunk beds, slide-outs, and RV beds.
- Foam type and density: Gel memory foam tends to offer pressure relief and contouring, while high-density polyurethane foam provides durability and support. Look for densities around 1.8 for base layers and ILD around 44 for balanced firmness.
- Certifications: CertiPUR-US and similar certifications indicate safer, regulated foam. These certifications are important for indoor air quality and long-term health considerations.
- Thickness and durability: Thicker mattresses (5–6 inches) typically provide more comfort but require sturdier frames. Assess how long you’ll be using the mattress and how often to replace or rotate it.
- RV and travel suitability: Some models are explicitly designed for trailers and motorhomes, with features like easy compression in packaging and compatibility with platform beds.
- Cover options: Some products are sold as cover-less or include a removable cover. If you need easy cleaning, choose models with removable, washable covers or plan for an aftermarket cover.
- Return policy and warranty: Check Amazon’s return policy for oversized mattresses and any warranty coverage for foam integrity or deformation.
- Budget and DIY potential: Foam toppers and cores enable DIY configurations—consider how modular you want your sleep setup to be.