The ring sling is adjustable and forms to the baby and your body easier... a pouch is harder to get the correct fit, but it's the same concept, just not adjustable, even the adjustable pouches you can adjust as well as a ring sling because the ring sling you can pull not just at the rails but through all the fabric to make it nice and snug
the key to making every carrier comfortable is high and snug... you should be able to kiss your baby's head... if you can't then you are wearing your baby too low and it will strain on your back
a woven wrap is exactly what it sounds like, it's woven threads and isn't as stretchy as jersey knit which is used for stretchy wraps like the Moby... it's breathes better, but it will still be pretty hot... tbh, any carrier is going to be hot because you've got your body heat up against your baby's body heat... but some carriers just breathe better, a jersey knit doesn't breathe very well.
For summers here... I usually grab something like an Ergo, a ring sling or a mei tai instead of a wrap.
The tail of the ring sling can be used to cover up while nursing or you can tuck it in if you don't like it...
Check out this interview I did about ring slings...
Sakura Bloom Friends In Chicago... at the very bottom you can see that I tied up the tail of the ring sling... and for reference, the blue sling is a double linen which is my favorite summer carrier... the linen breathes so well!!! At the bottom you can see I tucked in the tail on my striped silk one... this is my favorite ring sling since it is so sturdy and the most comfortable, but because it's silk it doesn't breathe as well in the summer but I could carry my toddler in that one if I wanted to and be super comfortable... and these are all pictures of Isaac... he was 9 months old in the top picture... and the newborn picture he was 6 weeks old... oh and the middle pictures with the red wagon and the laptop, he was about 4 weeks old... those were for a photo contest they had and I won the striped silk sling from that contest

I have another silk one too... and that is for a project I'm in the middle of doing for them and they are in the process of hopefully getting it up on the site soon
