{"v":"2.0","page_type":"product","title":"This is the optical quality, single vision MV Optical Model 31 with CR39 optical reading lenses. The larger, slightly squared, rectangular frame is a classic take on the intellectual, studious and smart wearer. This has adjustable hanging nose pads and spring hinged temples, assuring a comfortable fit on a wide variety of head sizes. The slightly larger lens and bridge size make this a perfect fit for most male head shapes. Model 31, by the experts at Multi-View Optical are a very high end, optical quality acetate frame sized for an average (unisex) head size. These single vision CR39 acrylic lens reading glasses are available in any power from +1.0 up to a +2.0. A CR39 optical lens is the latest in reading lens technology: Impact Resistant, Thin Light Weight, scratch resistant and includes 100% UV protection. Style 30 has a smooth acetate finish with spring hinged temples. Available in black or brown. Includes a clam shell design hard protective case.. Style 31 is sized for an average male head size. Here's the optical sizing scoop on Style 30: Lens: 54mm, Bridge: 18mm, Temple: 140mm","breadcrumbs":[{"label":"Home","href":"/python/html6/index.html"},{"label":"Brands","href":"/python/html6/menu_brand_index/menu_brand_index_brands_87101ba214.html"},{"label":"MV Optical","href":"/python/html6/menu_brand_products/1000/99000/menu_brand_products_MVOptical_1_c907079532.html"},{"label":"mv31singleblack-225","href":null}],"content":{"product":{"mpn":"mv31singleblack-225","manufacturer":"MV Optical","brand":"MV Optical","brand_url":"/python/html6/menu_brand_products/1000/99000/menu_brand_products_MVOptical_1_c907079532.html","title":"This is the optical quality, single vision MV Optical Model 31 with CR39 optical reading lenses. The larger, slightly squared, rectangular frame is a classic take on the intellectual, studious and smart wearer. This has adjustable hanging nose pads and spring hinged temples, assuring a comfortable fit on a wide variety of head sizes. The slightly larger lens and bridge size make this a perfect fit for most male head shapes. Model 31, by the experts at Multi-View Optical are a very high end, optical quality acetate frame sized for an average (unisex) head size. These single vision CR39 acrylic lens reading glasses are available in any power from +1.0 up to a +2.0. A CR39 optical lens is the latest in reading lens technology: Impact Resistant, Thin Light Weight, scratch resistant and includes 100% UV protection. Style 30 has a smooth acetate finish with spring hinged temples. Available in black or brown. Includes a clam shell design hard protective case.. Style 31 is sized for an average male head size. Here's the optical sizing scoop on Style 30: Lens: 54mm, Bridge: 18mm, Temple: 140mm","description":"","attributes":[{"name":"Brand name","values":[{"value":"MV Optical","url":"/python/html6/menu_attr_pair/1000/91000000/91036000/menu_attr_pair_Brandname_MVOptical_1_f190e6092f.html"}],"name_url":"/python/html6/menu_attr_pair/1000/91000000/91036000/menu_attr_pair_Brandname_MVOptical_1_f190e6092f.html"},{"name":"Manufacturer name","values":[{"value":"MV Optical","url":"/python/html6/menu_attr_pair/1000/34000000/34474000/menu_attr_pair_Manufacturername_MVOptical_1_56c8a328c9.html"}],"name_url":"/python/html6/menu_attr_pair/1000/34000000/34474000/menu_attr_pair_Manufacturername_MVOptical_1_56c8a328c9.html"},{"name":"Manufacturer","values":[{"value":"MV Optical","url":"/python/html6/menu_attr_pair/1000/64000000/64072000/menu_attr_pair_Manufacturer_MVOptical_1_84a5e7e89d.html"}],"name_url":"/python/html6/menu_attr_pair/1000/64000000/64072000/menu_attr_pair_Manufacturer_MVOptical_1_84a5e7e89d.html"}],"images":[],"distributors":[{"name":"Walmart","sku":"632407858","url":"https://www.walmart.com/ip/MV-Optical-Single-Vision-Reader-Model-31/632407858","pricing":[{"quantity":1,"price_usd":79.95}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://i5.walmartimages.com/asr/80b6a2ce-a64e-49a6-b7ca-24d7ddf79b58_1.7bf8fc6d5cb018413d6ffc68be92b6fb.jpeg?odnHeight=450&odnWidth=450&odnBg=FFFFFF"}],"amazon":{"available":false,"products":[]},"metadata":{"generated_date":"2026-09-16","last_updated":"2026-09-16","data_sources":["Walmart"],"completeness":0.55,"version":"1.2"}}},"pagination":null,"nav":{"home":"/python/html6/index.html","brands":"/python/html6/menu_brand_index/menu_brand_index_brands_87101ba214.html","parts":"/python/html6/menu_part_index/menu_part_index_parts_909e6bf0ca.html","attributes":"/python/html6/menu_attr_index/menu_attr_index_attributes_d7f67a250d.html"}}