The softer and more elastic feel of SI-X masturbators were achieved using the "Fine Cross" material without sacrificing durability. Type F is the fellatio version of the SI-X in terms of its sensation. The inner wall has a flexed tongue-like structure giving you a great sensation while the small opening providing you with a tight feeling. The vacuum chamber at the end adds to the suction feeling of the product. ToysHeart's SI-X Type F is a must for any fellatio lover.
*Use only water-based lotion or lube with this product.