Photo 1 of koorlian 12 Inch Twin XL Mattress in a Box for Back Pain, Medium Firm Feel Fiberglass Free Hybrid Mattress with Individual Pocket Springs and Pressure-Relieving Memory Foam, Grey, 120-Night Trial

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Photo 1 of koorlian 12 Inch Twin XL Mattress in a Box for Back Pain, Medium Firm Feel Fiberglass Free Hybrid Mattress with Individual Pocket Springs and Pressure-Relieving Memory Foam, Grey, 120-Night TrialPhoto 2 of koorlian 12 Inch Twin XL Mattress in a Box for Back Pain, Medium Firm Feel Fiberglass Free Hybrid Mattress with Individual Pocket Springs and Pressure-Relieving Memory Foam, Grey, 120-Night Trial