About This Microfiber 4 PIECE TWIN SIZE COMPLETE BED SET INCLUDES: 1 fitted sheet 39" (W) x 75" (L) and fits 10-12" thick mattress. 1 flat sheet 66" (W) x 96" (L). 1 standard pillow case 20" x 30".1 twin/full reversible comforter 72" (W) x 86" (L). Designed to fit a standard twin size bed. 5 PIECE FULL SIZE COMPLE