Tour Plus. It combines effective PunctureGuard protection with a strong Trekking profile. Features Compare All Schwalbe Touring Tires Specifications Art. # ETRTO Size Technology Color Compound PSI Weight EPI Load Tube 11100720 47-559 26 x 1.75 PunctureGuard Black-Reflex SBC 45-70 32oz (910g) 50 220lb (100kg) 13,14 11100738 50-559 26 x 2.00 PunctureGuard Black-Reflex SBC 35-70 34.5 oz (980g) 50 242lb (110kg) 13,14 11100721 37-622 28 x 1 3/8 700x35C PunctureGuard Black-Reflex SBC 55-85 26.8oz (760g) 50 198 lb (90kg) 17,18 11100722 40-622 28 x 1.5 700x38C PunctureGuard Black-Reflex SBC 50-85 31.7oz (900g) 50 220lb (100kg) 17,18 11100723 47-622 28 x 1.75 700x45C PunctureGuard Black-Reflex SBC 45-70 35oz (995g) 50 242lb (110kg) 17,19 Related Articles What do size markings on bicycle tires mean? Article:Compare and Understand Schwalbe Compounds Schwalbe compounds and Technologies (pdf)