Compare the listed lengths across Booty Sparks Large models
Use the same measurement for each model even when their size labels match.
Check what each length covers
The Pink and Clear listings give 4 inches overall and 3 insertable. The Clover listing gives 3.8 overall and 3.4 insertable. Keep the overall and insertable figures in separate columns.
Ask about unlabeled features
Match the color and model when asking for a diagram. Ask the maker to label the stem, maximum width and external base span. An unlabeled front image gives no reliable measurement.