Boneless Leather

Armor (leather), very rare (requires attunement by a rogue)

This supple +2 leather armor is tremendously flexible and helps your body to contort in seemingly impossible directions, even compressing and bending without breaking. You have resistance to both magical and nonmagical bludgeoning damage, including damage from falling. You also have advantage on Strength or Dexterity checks or saving throws made to resist grapple and Shove attacks, escape being grappled or restrained, or to squeeze through tight spaces.