I'm seeking a penis sleeve, because i ejaculate prematurely since we started with orgasm control and denial. The thing is: when erect im 20-21 cm (8inch). Thats measured from top side of shaft, all the way from tip to pubes. Most penissleeves arent that big or shit quality, or do i measure wrongly? Main reason is my partner really loves PIV, but i dont last when she denies me for longer periods. Any tips on a good, body safe sleeve?