You can spray water to keep it on the window. When there is light indoors at night but outside is darker than indoor, the window film is transparent and the outside can clearly see inside. One-way film shading design, the scenery outside the window will be darkened and a little blurry!
eBay
Window Privacy Tint Film One Way Vinyl Mirror Foil Non Adhesive Glass Screen Stickers Rolls Anti Look UV House Protection Tools
Aliexpress UK
THICK AND HIGH QUALITY - have excellent thermal insulation effect, with anti-scratch layer on the surface, friction. HEAT INSULATION AND ENERGY SAVING - blocking out 85% of infrared rays, retain heat in winter and keep it out in.
eBay
Anti Look Window Privacy Film Pure Frosted Glass Sticker 3D Rainbow Static Cling Mirror Movie Matte Opaque Sun Blocking Foil
Aliexpress UK
THICK AND HIGH QUALITY - have excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting. Note: Always only reflects the bright side. Tip 2: Trim away the edges.
eBay
50-Piece Set 5inch Five-Pointed Star Gold Star Aluminum Foil Balloons, Non-Floatable, Suitable for Window Decoration and Ceiling Gold Star Accents
Aliexpress UK
You can spray water to keep it on the window. When there is light indoors at night but outside is darker than indoor, the window film is transparent and the outside can clearly see inside. One-way film shading design, the scenery outside the window will be darkened and a little blurry!
eBay
1pc Double-Layer Aluminum Foil Insulation Film Thickened Sash Roof Insulation Sunshade Home Roof Windows Balcony Sunshade
Aliexpress UK
THICK AND HIGH QUALITY - have excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting. Infrared cut: 88%. Note: Always only reflects the bright side. Tip 2: Trim away the edges.
eBay
House Blackout Window Film Sun Shade Insulation Aluminum Foil Pad Balcony Room Car Glass UV Protection Curtain Screen Tools
Aliexpress UK
Length 5M,Width 75cm. this Window film can't be used for any vehicles. Due to the light and screen difference, the item's color may be slightly different from the pictures. Color: As picture show. Material: PET.
eBay
House Window Privacy Film Non Adhesive Vinyl Mirror Foil Anti Look Heat Car Glass Screen Tint Stickers Rolls UV Protection Tools
Aliexpress UK
THICK AND HIGH QUALITY - have excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting. Note: Always only reflects the bright side. Tip 2: Trim away the edges.
eBay
One Way Window Privacy Film Sun Blocking Vinyl Glass Sticker Anti Look Mirror Movies Foil Self Adhesive Opaque Paper Tint Film
Aliexpress UK
THICK AND HIGH QUALITY - have excellent thermal insulation effect, with anti-scratch layer on the surface, friction resisting. Note: Always only reflects the bright side. Tip 2: Trim away the edges.
eBay
Sunroom window heat insulation film, suitable for balcony, bedroom, living room, aluminum foil sunshade panel
Aliexpress UK