Free Express Shipping! Vortex 10x25 Solo Monocular Roof Prism Design, Fully Multi-Coated Lenses, O-Ring Sealed/Waterproof & Dustproof, Nitrogen-Purged/Fogproof, Durable Rubber Armoring, Twist-Up Eyecup, 15mm Eye Relief, 4.4 x 2.2", 5.6 oz