Complex sentence: Regardless, there is generally no seam down the front of the pouch as there usually is with conventional thong underwear for men, the reason being that such a seam would be visible beneath clinging tights.
Split into simpler sentences: Regardless, there is generally no seam down the front of the pouch as there usually is with conventional thong underwear for men. The reason being that such a seam would be visible beneath clinging tights.