"I'll definitely be stashing this lightweight Alo Yoga Travel Mat ($80) in my suitcase for holiday travels. It's thin but super grippy even when things get sweaty during a hot yoga or Pilates session, with a rubber backing to provide a little bit of cushion. Note: the mat smells pretty rubber-y when you first roll it out, so make sure to let it air out for a bit if the scent bothers you." — MR