--- product_id: 43084568 title: "Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender" brand: "mattress helper" price: "€ 105.38" currency: EUR in_stock: false url: https://www.desertcart.be/products/43084568-mattress-helper-mini-under-mattress-support-extender-fix-your-sagging store_origin: BE region: Belgium --- # 31-inch extender length Lightweight 2 lbs for easy handling Designed for California King mattresses Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender **Brand:** mattress helper **Price:** € 105.38 **Availability:** ❌ Out of Stock ## Summary > 🛏️ Upgrade your sleep game—because sagging mattresses are so last season! ## Quick Answers - **What is this?** Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender by mattress helper - **How much does it cost?** € 105.38 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/43084568-mattress-helper-mini-under-mattress-support-extender-fix-your-sagging) ## Best For - mattress helper enthusiasts ## Why This Product - Trusted mattress helper brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Contoured Comfort:** Firm yet gentle support that’s undetectable under your mattress—no hard spots, just smooth rest. - • **Tailored for California King:** Specifically engineered as a perfect add-on for California King beds, ensuring seamless fit and stability. - • **Extend Your Mattress Lifespan:** Add 18 extra inches of firm support to sagging mattresses without a full replacement. - • **Cost-Effective Mattress Rescue:** Save hundreds by reinforcing your mattress instead of buying new—smart, sustainable sleep upgrade. - • **Easy Installation & Versatility:** Lightweight and compact design fits under mattresses or couches—measure first for perfect support. ## Overview The Mattress Helper MINI is an 18-inch long under-mattress support extender designed exclusively as an add-on for California King mattresses. Lightweight at just 2 pounds and contoured for comfort, it reinforces sagging areas without the need for a full mattress replacement. Ideal for platform beds and couches (with proper measurement), it offers a cost-effective, easy-to-install solution to extend mattress life and maintain firm, comfortable support. ## Description desertcart.com: Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender : Home & Kitchen ## Features - DESIGNED *ONLY* AS AN ADD-ON for EXTRA LENGTH to regular Mattress Helper - ONLY use for California King mattresses or as needed for EXTRA LENGTH - ONLY 18" INCHES LONG - NOT TO BE USED WITHOUT regular MATTRESS HELPER - Can be used for Couch support BUT MEASURE FIRST - ONLY 18" INCHES LONG ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00UB5YQRW | | Additional Features | Durable, Orthopedic | | Age Range Description | Adult | | Brand | Mattress Helper | | Brand Name | Mattress Helper | | Color | Beige | | Construction Type | Memory Foam | | Cover Material | polyurethane | | Customer Reviews | 3.8 out of 5 stars 134 Reviews | | Fill Material | Memory Foam | | Item Dimensions | 18 x 31 x 2 inches | | Item Firmness Description | Firm | | Manufacturer | Mattress Helper | | Manufacturer Part Number | COMIN16JU018348 | | Material Type | Memory Foam | | Model Number | COMIN16JU018348 | | Size | King | | Top Style | Tight Top | | UPC | 851466005043 | | top-style | Tight Top | ## Product Details - **Brand:** Mattress Helper - **Color:** Beige - **Construction Type:** Memory Foam - **Cover Material:** polyurethane - **Fill Material:** Memory Foam - **Item Firmness Description:** Firm - **Size:** King - **Special Feature:** Durable, Orthopedic - **Top Style:** Tight Top - **UPC:** 851466005043 ## Images ![Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender - Image 1](https://m.media-amazon.com/images/I/817WW53DUnL.jpg) ![Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender - Image 2](https://m.media-amazon.com/images/I/91G3rERhS-L.jpg) ![Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender - Image 3](https://m.media-amazon.com/images/I/81HHh3h3bSL.jpg) ![Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender - Image 4](https://m.media-amazon.com/images/I/715ltw0ew0L.jpg) ![Mattress Helper MINI Under Mattress Support Extender- Fix Your Sagging Mattress Firmer Solution for Mattresses - Mini Extender - Image 5](https://m.media-amazon.com/images/I/81PJUF--eGL.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/43084568-mattress-helper-mini-under-mattress-support-extender-fix-your-sagging](https://www.desertcart.be/products/43084568-mattress-helper-mini-under-mattress-support-extender-fix-your-sagging) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-08-11*