Continuous, densely packed small knobs provide low rolling resistance Well rounded tire performs equally well on gravel, hard pack, and pavementRSD+ - High density woven nylon fabric reinforces the sidewall providing excellent protection against cuts and abrasions and is sealant compatibleTubeless700x40622TBLS - FoldBk/Blk60535120RSD+/TRNoUPC/EAN/GTIN: 6927116102616