Most binocular straps either have nolens protection at all or have a large,unwieldy storage container that offers noattachment or tether while optics are inuse. The LockDownX provides the bestof both worlds using a pliable cover fora low profile fit and ShockCord SecurityStraps that fasten your optics for maximumsecurity. While providing low-profile lensprotection and constant optics security, theLockDownX is Extra Comfortable, ExtraBreathable, Extra Light, and Extra Quiet.The LockDownX fits binoculars that rangefrom 5.75? to 7.5? in length.