I am currently packing for our trip to Park City & doing my best to be lean

. My biggest concern is whether my boot bag (Dakine 75L) will pass as a carry-on bag; it's a bit bulky & typically I have it fully loaded for normal ski weekends, so it is really awkward & large. However, I have emptied it out for this trip; loaded it with ski boots, helmet, goggles, mittens, 1 baselayer set, pair of ski socks & a rolled up shell ski bibs. So, I can easily squash the bag to fit in an overhead bin, but doubt it will go under the seat. I am thinking if I get through baggage check with it & the plane runs out of bin space, they will just gate check it, which is still better than checking it! Anyone know how stringent Delta is with the sizing on carry ons? American can be BRUTAL. I guess if they do make me check it, I can shove my helmet in my tote bag (or as
@lisamamot stated, I can just wear it

) & carry my boots as a personal item.