JOBY Pro Sling Strap (SM - L) - For Professional DSLR and Mirrorless Cameras Designed for DSLR, mirrorless and Pro DSLR cameras. Size S - L. Speed: Lightning Fast SpeedCinch System extends the strap automatically as you glide your camera up from your side to the shooting position  all in one fluid motion Security: SpeedCinch System and custom hardware allow you to keep your camera close to body for hands free activity; strap locks in cinched position for added security Strength: Low profile, high-strength materials and integrated tread with an anti-slip grip provides comfort, durability and a sleek look with no bulk