Features:Stickers on your rear window and gives a much wider view of the road behind you - with no blind spotsEnables you to spot children and pets that are below the level of the rear windowQuality lens provides low distortion and no dazzle or double imagesEasily removable - sticks to your window with water - it\’s that simple!A wide rear view Fresnel lens is THE sensible option for any vehicle owner - get yours now and increase safety Thickness: 1mmMaterial: PlasticWhat is wide angle rear window fresnel lens?A clear wide-angle rear window fresnel lens is a thin flexible negative fresnel lens which adheres instantly with water to the rear window of your vehicle to provides driver a increased angle of full view. The lens enable you to actually see many objects under the rear window you can’t not see through inside and outside rear view mirrors.Use the rear window fresnel lens， you can avoid accidents due to the children， pets and other low-lying objects in blind spot behind your vehicle while backing up. The lens can also be applied on a side window for larger vehicles to aviod squeeze accidents. Specifications:Feature of wide angle rear window fresnel lens* Easily applied and removed by using water only.* Easy installation on rear window of your vehicle.* No tools required.* Need no adhesive， just use water only* The lens is better working for vertical rear windows Size ReferneceLength: 25.5 cmWidth: 20.5 cmThickness: 0.1 cm Packing : 1pc