Balanced attack. The all new P-SLR 1 climbing wheelsystem features Giant's breakthrough Dynamic Balanced Lacing technology which ensures rear wheel spoke tensions are balanced under load - not while static. The result of years of development with Giant engineers, product designers and pro athletes, DBL produces a wheel that offers improved acceleration and climbing response along with durability, while optimised anchor points increase lateral stiffness for exceptional cornering performance. Clincher and tubeless compatible, SLR 1's ultra lightweight full composite construction produces a wheelsystem that weighs in at just 1425g while offering an unbeatable ride.UCI and ITU tested and approved.