10 Best Side Sleeper Mattress Topper 2026 in the United States

The Ultra Soft Queen Size Mattress Topper by Niagara Sleep Solution is designed to provide comfort and support for side sleepers. Made from viscose derived from bamboo, it is environmentally friendly and ultra-soft, making it gentle on sensitive skin. The topper measures 60x80 inches and fits mattresses 8-20 inches deep, which adds convenience for various mattress sizes.

The 2-inch thickness adds an extra cushion that can help alleviate back pain, contributing to a more restful sleep experience. Its cooling features make it ideal for hot sleepers, as it is designed to be sweat-absorbent, maintaining a cooler sleeping surface. Additionally, it is machine-washable, making it easy to maintain and ensuring it stays fresh and clean over time.

However, the product does not offer water resistance, which might be a concern for those looking for that specific feature. Furthermore, while it provides good support and comfort, some users might find the 2-inch thickness insufficient depending on their personal preference for firmness. The green color and pillow-top design add a touch of aesthetics and extra comfort. It's a great choice for side sleepers looking for a soft, cooling, and easy-to-maintain mattress topper, although those needing water resistance or a firmer option might need to look elsewhere.

The Tempur-Pedic TEMPUR-Adapt + Cooling 3-Inch California King Mattress Topper is made from premium TEMPUR-ES memory foam, known for adapting closely to your body shape and weight. At 3 inches thick, it offers a notable layer of cushioning that can relieve pressure points, which is particularly helpful for side sleepers who need extra softness around shoulders and hips. This medium-firmness topper strikes a balance between comfort and support, making it suitable for those who want some give without sinking too much.

One of its standout features is the washable, cool-to-the-touch cover made from breathable, high-stretch fabric. This helps regulate temperature and reduce overheating—a common concern with memory foam products. Additionally, the topper includes an allergen barrier, which can be a relief for sensitive sleepers prone to allergies.

The product enhances comfort on any mattress, though its weight (over 30 pounds) might make it less convenient to move frequently. It is not water-resistant, so spills need to be managed carefully. The washable cover is easy to care for, but the foam core itself should never be washed or dry cleaned. This topper is versatile and portable, making it suitable for home use or travel like dorm rooms and RVs. Side sleepers looking for pressure relief and cooling features will appreciate how it softens a firmer mattress while preventing heat buildup. Those seeking a very soft or very firm feel might want to explore other options. Given its premium materials and thoughtful design, it represents a solid choice for side sleepers wanting a comfortable, temperature-friendly upgrade to their bed.

The Linenspa 3 Inch Gel Swirl Memory Foam Mattress Topper is a solid choice for side sleepers seeking added comfort and pressure relief. Made of memory foam infused with cooling gel, it helps reduce heat buildup, which is often an issue with foam toppers, making your sleep cooler and more breathable. The 3-inch thickness offers a plush yet medium firmness feel that conforms well to your body curves, helping to alleviate pressure points common for side sleepers, especially around hips and shoulders.

This topper is also CertiPUR-US certified, which means it’s made without harmful chemicals and adheres to safety standards. One nice feature is the multiple thickness options (2, 3, or 4 inches), so you can pick the level of softness you prefer. However, it is not water resistant and requires spot cleaning, so spills need quick attention. Some users might find the medium firmness not soft enough if they prefer very plush toppers, and it takes about 24-48 hours to fully expand after unpacking.

If you want to soften a firm mattress or breathe new life into an older one, this mattress topper balances comfort, cooling, and quality well, especially for side sleepers who need pressure relief without overheating.