This semi-slick tire borrows its tread design from the trail version of the Rekon, but with smaller and shorter knobs EXO - sidewall protection which helps prevent puncture from sidewall abrasions TR - Tubeless Ready - sealant required Tubeless 29x2.25 622 TBLS - Fold Bk/Blk 60 120 EXO/TRUPC/EAN/GTIN: 4717784033389