PROS: FDA-approved safe materials, difficult to…
CONS: Collects dirt and germs, uncomfortable, obstructs…
Read MorePROS: Soft plastic, breaks suction so sucking is…
CONS: Thumb can slip out, collects germs…
Read MorePROS: effective on small children 2-5 years old…
CONS: Uncomfortable and obstructs use of hand…
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