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One and done! This long-sleeve romper is the best new take on a workout onesie. With a square neckline, longs-sleeves and detailed seams throughout, the Allister Romper is perfect for a legit workout -- or at least looking like you did one.

  • Square Neckline
  • 3" Inseam
  • Long Sleeve
  • Thumb Holes
  • Seaming Details Around Waist
  • Seaming Details At Bust
  • Size XS-XL
  • 70% Polyester 30% Spandex