Work your nipples with these nipple suckers. Increase sensitivity with these teasing soft, pliable nipple suckers.
For best results remove hair from the nipple area for better grip. Use a good quality silicone lubricant such as Uberlube.
After lubricating the nipple the cup should then be lubricated inside & outside at the attachment end.
Place the cup firmly over the nipple and squeeze out all the air. Release gently and the cup will now be firmly attached. Repeat the process on the other nipple.
The cups can be tweaked and pulled, the vacuum will now encourage the nipple to swell.