Sears, Macy's and US-Matress.com all sell twin XL mattresses. Shoppers can find firm or soft mattresses from brands such as Sealy, Serta and Beautyrest on the retailers' official websites.
As of 2015, Sears offers a large variety of twin mattresses, mattress pads and bed sets with an 80-inch length that allows users to stretch their legs. Prices range from $165 to upwards of $2,600. While the Sealy Amici Select Firm Twin XL Mattress comes with a knit cover, a non-toxic fiber solution and SealyFoam technology for a plush feel, the Serta iSeries Vantage Firm Twin XL Mattress Set includes a layer of Cool Action Dual Effects Gel Memory Foam for added support and cooling.
Macy's offers a selection of spring mattresses, foam mattresses and pillow-top mattresses from Tempur-Pedic, Sealy, Serta and Beautyrest. Shoppers also find duvet covers, printed bedding sets, satin sheets and fleece blankets for twin XL mattresses. On US-Mattress.com, shoppers can sort mattress results based on brand, mattress type, firmness and comfort level. The Comfort Scale lets shoppers select the firmness from a scale of 1 to 10 with 10 being the softest. Shoppers can also choose from firm, plush, pillow-top and Euro-top mattresses, or they can search for innerspring, latex or memory foam mattresses.