Thick condoms are not just for anal sex or for those who want an extra safe condom. If you experience problems with premature ejaculation, a thick condom is something that can fix the problem. The thicker the condom the less feeling. This is also an alternative to stunning condoms.
You may have heard of Gay condoms? There are condoms called that. They are usually just extra thick - like these ones. So nothing more special than that. Better safe than sorry - use the thick one if you don´t have a problem with loss of sensitivity.