Clinical studies have proven that vacuum erection devices will give instantly harder erections, cause temporary flacid enlargement and can increase permanent penis augmentation. According to the American Urological Association, these devices may also be useful in cases where such PDE5 drugs as Viagra have failed to work! Doctors view the penis pump as a safe, effectual and cost effective treatment for erectile dysfunction and state that the prolonged use of these devices will enhance the size of the penis permanently. Other advantages of the PUMPED selection include delayed ejaculation, improvement of sexual appetite, boosting of testosterone, the maintenance of longer and harder erections and the supporting of penile tissue after prostate surgery. PUMPED, for instant results! Dimensions package 3.86" x 2.68" x 1.22" Weight package 10.12 oz Product dimensions 3.35" x 2.6" x 9.45" Product weight 7.51 oz Product volume 0.155 ml Product diameter 2.56" Inner diameter 2.36" Insertable length 7.87" Splashproof Yes Phthalate free Yes Materials ABS + Silicone