If you're seeking a very long dildo then the double headers are your best option because it's be far the longest ones ever made. Ranging from one foot to two feet long, of course you'll never be able to fit it all in but the reason these are sold is for couples play, a popular option for lesbians and if you want to make a movie or like to enjoy the naughtier side of sex then there is really no better choice out there then these double ended monsters.
Not always overly thick but the running theme is length it's up to you to choose the color and you're ready to go. Shop comfortably knowing that even though these require larger boxes, you won't incur extra shipping charges.