Why not! Aniwaniwa/Rainbow silicone anal toy? YIP!
Firm rigid shaft and flexibility makes it ideal for solo play
It's designed so that it easily fits in a harness so that you can share it with your partner.  

Always remember to use a water-based lube for a sensational ride.
 
Specifications
Allergens: Latex-Free , Phthalate-Free
Features: Harness Compatible , Has Balls , Suction Cup
Waterproof: Submersible
How it Measures Up
circumference: 1.2-4.3 inches
Insertable Length: 5.8 inches 
How it Feels
Flexibility: Flexible
Material: Silicone