The Specialized SIP Locking Grips are motocross inspired mountain biking grips. They feature a super tacky material for plenty of grip on your palms, backed up with a strategically placed half-waffle pattern so your fingers don’t slide around. The grips themselves securely lock to your bars so there is no chance of them moving around. The Small/ Medium Specialized SIP Locking Grips have a 30mm diameter & are available in a range of colours to match your bike. Features Super tacky, yet durable, grip provides superior control. Strategically placed, half-waffle pattern provides better grip & comfort. Moto-inspired design features a waffle relief for maximum thumb wrap/control. Small/ Medium diameter: 30mm Large/X-Large diameter: 32mm