As a first time e-stimmer, I ordered the 4mm. I'm not sure if they are better than the 2mm but the 4s sure work well....great sensation. They are a solid, well-made product.
As an e-stim rookie, I ordered the 4mm loops. I don't know if they are better than the 2mm, but I sure am happy with the results...feel great! They are solid and well made.
Must have! Sensation is much better than the 2mm. They don’t have the slight sharpness that the 2mm summertime have. Just feels great all around