Floyd Mayweather -- Deciding on Fight Gloves ... $2,500-a-Pair

If the 'look good, feel good, play good' adage is true ... Manny Pacquiao might be in trouble tonight ... 'cause TMZ Sports has the FIRST pictures of Floyd's fight night boxing gloves ... and they're SWEET.

Boxing brand Grant Worldwide's CEO Elvis Grant Phillips tells us his company hooked the champ up with 8 custom pairs of gloves. Mayweather picked his 3 favorite ... that he'll take to the MGM Grand.

We're told Floyd's torn between the Red/Blue/Silver and Gold/Red/Blue pairs ... it's a tough decision, 'cause he loves them both ... especially the metallic color schemes, which run $2,500-a-pair.

As far as Manny, no word yet on what his gloves look like ...