Swimming in this suit almost feels like a cheat code! As you submerge into the water the temperature difference is immediately noticeable; especially as your arms are "unprotected" by the suit. Beginning the swim, your arms/ shoulders will warm-up to your body temp making the swim increasingly more enjoyable. During the swim, the suit almost forces you into a streamlined position and legs held high. It feels like what Superman looks like flying thru the sky. (I know, corny analogy but its accurate!) The reason I am giving it 4-stars is because I am new to the Triathlon community and this is the first wetsuit I have ever purchased and used. So I cannot compare other suits and versions of Blue 70 suits to past experiences. I will say that when this suit comes to the end of its life, I will definetly buy the equivalent suit when the time comes!