Armor
A character wearing armor that they are not proficient with has disadvantage on all checks related to str or dex, and can't cast spells.
A character wearing armor whose strength requirement exceeds their own loses 10 from their speed.
Light
NAME COST AC STR STEALTH
padded 5 gp 11 disadvantage
leather 10 gp 11
studded leather 45 gp 12
Medium
NAME COST AC STR STEALTH
hide 10 gp 12
chain shirt 50 gp 13
scale mail 50 gp 14 disadvantage
breastplate 400 gp 14
half plate 750 gp 15 disadvantage
Heavy
NAME COST AC STR STEALTH
ring mail 30 gp 14 disadvantage
chain mail 75 gp 16 13 disadvantage
splint 200 gp 17 15 disadvantage
plate 1,500 gp 18 15 disadvantage