Nested Bean Zen Sack Classic - Grey Mist


An essential baby sleep sack for sleep training

The gently weighted Zen Sack helps your baby sleep through every sleep phase. Designed to help babies self-soothe and fall asleep independently, the Zen Sack eases the transition from swaddle to sack, and prevents sleep regressions and disruptions. Longer sleep in 1-3 nights. Safely weighted to mimic your touch. Trusted by over 1 million parents.


  • 0.5 Tog
  • Perfect for year-round use
  • Two-way zipper makes diaper changes a breeze
  • Zipper covers, cuddly seams and soft tags protect your baby’s skin
  • Can be worn backwards by tummy sleepers who can roll independently
  • Exceeds safety standards by 8x + Pulmonologist approved
  • Exceeds all AAP Guidelines

Size Chart

    (in lbs) (in kg) (in inches) (in cm)
SMALL 0-6 months 7-18 lbs 3-8 kgs 21-30 in 53-76 cm
MEDIUM 6-15 months 16-26 lbs 7-12 kgs 26-33 in 66-84 cm

Care & Safety

  • Wash in cold water on delicate cycle
  • Tumble dry on low heat
  • Exceeds the most stringent safety standards by 8x
  • Safe alternative to all-weighted sleepwear
  • Adheres to all Consumer Product Safety Commission requirements & AAP Guidelines

Fabric details

100% breathable cotton