The DHF incorporates ramped knobs for low rolling resistance and channel-cut knobs to increase gripping edges, giving straight-line control and precise cornering. Tubeless ready casing (TR) is compatible with tubes or tubeless with sealant EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions Tubeless 27.5x2.3 584 TBLS - Fold Bk/Blk 60 825 60 EXO/TR NoUPC/EAN/GTIN: 4717784026732