Puffy Lux Hybrid Mattress Size Guide Mattress Size Dimensions in Inches Twin 38"W x 75"L x 12"H Twin XL 38"W x 80"L x 12"H Full 54"W x 75"L x 12"H Queen 60"W x 80"L x 12"H King 76"W x 80"L x 12"H Cal King 72"W x 84"L x 12"H Split King 2 - 38"W x 80"L x 12"H