Best Side-Sleeper Mattresses 2026: Picked by a Sleep Science Coach

Mattress Mattress type Materials Firmness Height Certifications Trial Period Shipping Warranty Nolah Evolution Hybrid Organic cotton or GlacioTex cover, AirFoam Luxe memory foams, gel memory foam, AirBreath border gusset, pocketed coils Plush, luxury firm, firm 15 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return ($99 shipping fee) Arrives in a box as part of standard shipping; white-glove delivery available (mattress setup and old bed removal) for $225 Limited lifetime Helix Midnight Luxe Hybrid Tencel cover, memory foams, pocketed coils One option is 6.5/10 13.5 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return Free for customers in the contiguous US Limited lifetime Bear Elite Hybrid Hybrid Phase change material (PCM) cooling cover, copper-infused memory foam, dynamic memory foam, pocketed coils Soft, medium, firm 14 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return Free for customers in the contiguous US Limited lifetime Leesa Sapira Chill Hybrid Phase change cooling cover, cooling memory foams, pocketed coils Plush, medium firm, firm 14 inches CertiPur-US, GreenGuard Gold 120 nights; 30-day break-in period required before initiating return Free for customers in the contiguous US Limited lifetime Naturepedic EOS Classic Hybrid Organic cotton cover, plant-based PLA layer, organic wool batting, organic latex, organic cotton batting, organic cotton fill and fabric, pocketed coils Plush, medium, cushion firm, firm, extra firm (each side can have different firmnesses) 12 inches Global Organic Latex Standard (GOLS), Global Organic Textile Standard (GOTS), Made Safe, EWG verified, GreenGuard Gold, Formaldehyde-Free Claim Verified by UL Environment, Organic Content Standard certified, Organic Trade Association certified, Responsible Wool Standard Certified, Forest Stewardship Council certified 100 nights; 30-day break-in period required before initiating return Arrives in a box as part of standard shipping. For contiguous US shoppers, mattress setup is $299; setup and old bed removal is $349 25-year limited Saatva Contour5 Memory foam Cotton cover, memory foam Medium, firm 12.5 inches CertiPur-US, GreenGuard Gold Year-long sleep trial; $99 return fee White glove delivery included with purchase Lifetime Casper Dream Hybrid Memory foam hybrid Knit cover, memory foam, zoned memory foam, pocketed coils, foam rail edge support Medium firm 12 inches CertiPur-US 100 nights Arrives in box as part of standard shipping; separate shipping fee for Alaska and Hawaii 10-year limited Birch Luxe Natural Hybrid Organic cotton cover, wool, organic latex, pocketed coils Medium 11.5 inches Global Organic Latex Standard (GOLS), GreenGuard Gold 120 nights; 30-day break-in period required before initiating return ($99 shipping fee) Arrives in a box as part of standard shipping; white-glove delivery available for $199 Limited lifetime The WinkBed Hybrid Tencel cover, gel memory foam, pocketed coils Softer, luxury firm, firm, Plus 13.5 inches CertiPur-US 120 nights; 30-day break-in period required before initiating return Free shipping via UPS ground for contiguous US Limited lifetime Wolf Memory Foam Hybrid Premium Firm Mattress Hybrid Cooling cover, gel memory foam, support foam, pocketed coils Medium firm 13 inches CertiPur-US 101 nights; 30-day break-in period required before initiating return Arrives in a box as part of standard shipping Limited lifetime Sonu Sleep System Hybrid Cooling cover, “Comfort Channel” internal structure, and support foams that contain “Support Pillows”; cooling foam, support foam, pocketed coils Firm, 8/10 14 inches CertiPur-US 100, return fee is $99, and can go up to $250 Free delivery within the contiguous US 10 years Sleep Number ComfortNext Lux Smart bed Phase change cooling cover, copper gel memory foam, support foam, Ultra-Flex air chambers, rail system, comfort foam, bottom cover, air control unit 45 firmness levels 13 inches CertiPur-US 120 nights Arrives in a box as part of standard shipping 5 years full coverage, 20 years prorated coverage