Helix Kids Mattress (Low Profile) review

Helix is the only maker on this list that sells a children's mattress in a height it labels for bunk beds. The Helix Kids Mattress comes in an 8-inch standard height and a 6-inch Low Profile/Bunk Bed version, which Helix describes as the same flippable design, low enough for a bunk or trundle frame. One side is firmer and suggested for children aged 2 to 7, and the other is softer for ages 8 and up, so the mattress can follow a child from a first bunk to a teen bed. Helix says its foams are Greenguard Gold and CertiPUR-US certified, the mattress is fiberglass free, and the fabric is water repellent. The 6-inch twin weighs 37 lbs, which matters when you lift it onto a top bunk to change sheets. When we checked, the twin cost $599 with a 20% off code, the same as the 8-inch model. The trade-offs are price and choice: the cooling cover is only offered on the 8-inch height, and only twin and full sizes are sold.

Who it is for

parents who want a kid-specific bunk mattress

Price

Twin $599 with Helix's 20% off code (list $748.75) when checked.

Helix Kids Twin, 6" (Low Profile/Bunk Bed) $599 $748.75
Quoted from the vendor pricing page on November 11, 2026.

Key features

• 6-inch low profile height that Helix labels Best for bunk beds
• Flippable: firmer side suggested for ages 2 to 7, softer side for ages 8 and up
• Greenguard Gold and CertiPUR-US certified foams, fiberglass free
• Twin is 38 x 75 inches; the 6-inch version weighs 37 lbs
• 365-night sleep trial and Limited Lifetime Warranty

Strengths and weaknesses

• Strength: The only kid-specific mattress here sold in a 6-inch bunk height
• Strength: One mattress covers ages 2 through the teen years by flipping it
• Strength: Same $599 twin price as the standard 8-inch version
• Weakness: Costs about five times the Linenspa 6-inch foam model
• Weakness: The 6-inch height comes with the TENCEL cover only; the cooling cover is 8-inch only
• Weakness: Twin and full sizes only

Key facts

• Price: $599 twin when checked
• Height: 6 in (Low Profile/Bunk Bed)
• Weight: 37 lbs
• Trial: 365 nights

Where it ranks

Helix Kids Mattress (Low Profile) is No. 1 in our Best Bunk Bed Mattresses verdict.