This product is not compatible with latex. Perfect Fit Brand Products are sold, and intended for use strictly as adult novelty toys for entertainment. They are not intended for medical use and have not been clinically tested. No medical claims are warranted or implied by the use of these products. Dimensions for Medium size double tunnel plug 3.5 inches insertion length by 6.9 inches in circumference. The Double Tunnel Plug Black Medium from Perfect Fit Brands.