*Returns not accepted on any opened, used, or defective product. Contact the manufacturer directly for further defective products/parts.

From Owlet, this sock extension pack features: 

• Allows you to continue tracking your child's sleep trends up to 5 years of age or 55 lbs.
• The toddler-sized fabric sock works with your existing Dream Sock sensor to provide accurate readings as your child grows.
• Love your Dream Sock for longer, 18 months-5 years
• Continue tracking sleep trends as your child grows
• Soft fabric sock wraps comfortably around the foot
• Optimized technology for up to 42 months of readings
• Durable design helps keep Dream Sock in place
• Spot clean/lay flat for drying
• US only

Imported.