Hydrae Small:
Height: 7 inches
Useable: 5.75 inches
Head circumference: 4.25 inches
Swell circumference: 5 inches
Max useable circumference: 6.5 inches
Base circumference: 8.5 inches

**NOTE: This product is made with Near Clear Ecoflex silicone and will therefore discoloration is more obvious (not more likely) than regular cloudy silicone. Please use extra caution to avoid staining with oil based lubes and bodily fluids. Boiling for long periods of time is not recommended. Please read our FAQ for additional care instructions.