I have personally tested these blinds prior to bringing them in from the UK. They are brilliant! I used the large size on my sons bedroom window which is a pretty standard size window in a modern home. There was loads of fabric to cover the window. I could have chosen to cut the fabric but instead I left the excess out and tucked it behind the roll down blind we have. (which normally lets in loads of light).  

It truly blacks out everything, and there is a generous number of velcro pads to make sure those tricky corners and sides stay shut! The best thing is, they are so easy to put up and take down. Please scroll down the page to see full description and sizing details.

FEATURES AND SIZES

Easynight^TM black blackout material is silvered on one side for better light and heat reflection.

Lightweight, this fabric weighs 170g per square metre

Easily cut to size with scissors, if you wish, or it can be kept large to fit different size windows.

Now available in 4 sizes:

Regular:  1.5m x 1.45m, includes 16 fabric fastener strips and 16 frame fastener strips 

Large:  2m x 1.45m, includes 16 fabric fastener strips and 16 frame fastener strips 

Extra Large:  2.3m x 1.45m, includes 16 fabric fastener strips and 16 frame fastener strips 

XX Large: 3m x 1.45,  includes 20 fabric fastener strips and 20 frame fastener strips

This Home pack has just velcro self-adhesive pads to stick to your aluminium or wooden frame around your window at home.  Easynight(TM) can also be used with 3M Command(TM) Strips, not included, on the window frame. Suctions are not included this pack. Suction cups are provided with the portable version. 

Easynight(TM) can also be used with 3M Command(TM) Strips, not included, on the window frame. 

Home Version 

Apply to any window using self-adhesive removable fastener strips on the window frame.

Please read the instructions which come with the blind prior to using.

Here is some important info to read prior to putting the blinds up:

1. The window frame must be completely clean and dry.  Some cleaning products can leave a residue behind so we recommend rinsing the frame with water after cleaning, and allowing it to dry completely.
2. It's important to place the strip correctly the first time, as removing and re-positioning weakens the adhesive. I also found placing the velcro pads higher and closer to the edge of the blind than the photograph shows on the instruction booklet made a firmer grip so the blind could not flop over and let light sneak in. For additional protection against peeping light you can use the 3M Command strips (not included) and place these strips in the corners of the windowsill as shown in the photographs.
3. Please use all self-adhesive pads evenly to distribute the weight of the blind.  When placing the sticky pads on the blinds, make sure this is on the silver backing, press firmly and leave 24 hours so the special fibre can adhere to the blind.