Well spaced paddle like knobs in the center and large siped corner power through any terrain EXO equipped models feature Maxxis` EXO sidewall protection which help prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required Maxxis race triple compound Tubeless 27.5x2.6 584 TBLS - Fold Bk/Blk 40 750 120 EXO/TR NoUPC/EAN/GTIN: 4717784032641