Small Eisen -- Soft silicone -- OF-E-31 Tenta Twirl But thankfully it's usually not

But thankfully it's usually not too noticeable and doesn't affect their squishability

She's excited to make it to her bi-weekly book club

In this instance the base of the resulting toys are either concave or convex

This should not impact use of the toy

These measurements are approximate

Small Eisen -- Soft silicone -- OF-E-31 Tenta Twirl But thankfully it's usually not**Before buying, please familiarize yourself with our Store Policies and Shipping Policies. For information on silicone firmnesses, please visit the Our Silicone page.** Small Eisen Firmness: Soft (0030) Color: black, green Approximate Measurements: Total length: 5 inches Useable length: 4. 5 inches Diameter of the head: 1. 1 inches Circumference of the head: 3. 5 inches Widest shaft diameter: 1. 4 inches Circumference of the shaft: 4 inches Base