The iFlight branded Lipo Strap is rubberized on the side facing the lipo which ensures the lipo can't slip out, even without any additional hook and loop adhesive applied to the lipo and frame. These "medium" size straps are 
200mm long and 20mm wide.

Description:

Brand name: iFlight
Item name: Battery strap
Color: black
Length:200mm
Width: 20mm

Package included:

1x 20x200mm Battery straps 

any additional hook and loop adhesive applied to the lipo and frame. These "medium" size straps are 
250mm long and 20mm wide.

Description:

Brand name: iFlight
Item name: Battery strap
Color: red 
Length:250mm
Width: 20mm

Package includes:

1x 20x250mm Battery straps red