Hot summer weather is hot summer weather. When it's hot, I either
A) Wear cargo shorts and put it in a pocket, or
B) Use an inside-the-waistband holster and drape a t-shirt over it.
For inside-waistband carry, any bulge these days will be assumed to be your smartphone holster.
I know all that. I’ve been carrying concealed in Florida for 15 years! My entry into this thread was about my support for someone that built some features into a pair of long pants without cargo pockets that help you wear an IWB comfortably. Some situations do not fit well with cargo shorts and an untucked shirt.
Many pants with elastic waitbands do not have belt loops and vice-versa. I can carry a small handgun in pants without elastic. But carrying a fat handgun (Glock/Beretta widths) requires buying pants one waist size larger which makes for a baggy ass.
The pants in the OP have both, which is a big help for concealed carry in situations where cargo shorts (or even cargo pants) aren’t really acceptable and the elastic allows for the option of small gun/big gun/no gun with nothing but a belt adjustment.