Toddler:
Width - 6"
Height - 2.5" expands to 6"
Elastic - 4.25" - 5" (Based on Elastic Brand and Hard/Soft Pull)
Kid:
Width - 6.5"
Height - 2.5" expands to 6.5"
Elastic - 5" - 5.5" (Based on Elastic Brand and Hard/Soft Pull)
Teen:
Width - 6.75"
Height - 2.5" expands to 7"
Elastic - 5.5" - 6" (Based on Elastic Brand and Hard/Soft Pull)
Adults:
Width - 7.5"
Height - 2.75" expands to 7.5"
Regular size Elastic - 6" - 6.5" (Based on Elastic Brand and Hard/Soft Pull)
Large size Elastic - 7.5" - 8" (Based on Elastic Brand and Hard/Soft Pull)
NOTE: The pull of the elastic determines how much is needed to fit that size. For example, if the elastic is very easily stretched, less is needed to get a comfortable fit. If the elastic pull is very hard, more elastic is needed.