①Including a piece of 120cm X 160cm transparent film, a roll of adhesive loop straps(2.5cm width) and a roll of adhesive hook straps(2.5cm width) inside.Film thickness is about 180㎛(0.18mm or 7mil),enough to agiast strong winds.Fits for windows smaller than 120cm X 160cm. ②Easy to install by adhesive loop straps,no drilling tool need.Just peeling off the straps to open your windows for ventilaton. ③Soft,good tenacity and transparent material.Can be folded for reusing it in the future. ④Suitable for most kinds of windows.NOT suitable for often ventilation windows.If used outdoor or windows without glass, you should nail it around yourself. ⑤Two pieces of film can be combined together by the adheseive straps to cover bigger windows. ⑥Contain the frame when measure the size, then choose the film bigger than yours. ⑦Fold the flim 90 degree for narrow or uneven windows frame. ⑧Keep open status function.And you can keep windows ventilated all the time when you need. Coverage Up to 120cm X 320cm (when combining two films) Brand Name Mellroom Manufacturer Mellroom Material Type Polyethylene (PE) Item Thickness 0.18 Millimeters Item Dimensions L x W 63 L x 47 W Recommended Uses For Product window insulation, keeping cold out, winter use