
They don't fit over square bassinet mattresses so I wouldn't say they're universal. My mattress is a bit warped at the moment, but LO has heartburn so leaning a little helps him. They are still soft even after several washes and the elasticity is still okay.

Soft Fleece Swaddle Blanket For Newborn Baby Boys And Girls - XMWEALTHY Stroller Wrap In Dark Blue
30 Review

Baby Floral Fitted Crib Sheet For Boy And Girl Toddler Bed Mattresses Fits Standard Crib Mattress 28X52 (Pink Mint Floral)
29 Review

2.5 TOG Cotton Toddler Sleep Sack With Feet For Winter, Long Sleeve Baby Wearable Blanket For 2T-3T Weighted Sleep, Comfortable Sleep Sacks With Legs
39 Review

TILLYOU Sleep Sack - Sleeveless Quilted Sleeping Bag Baby, Fits Infants Newborns Age 18-24 Months, Grey Stripes
31 Review

MaidMAX Cube Storage Bins, Foldable Fabric Storage Container With Handles For Closet, Laundry, Home And Office, Wood Grain Print, Set Of 6
41 Review

Unilove Hug Me Plus Plum Pink: 3-In-1 Bedside Sleeper & Portable Bassinet For Newborns With Enhanced SEO
33 Review

Kids Kitchen Step Stool with Safety Rail - Toddler Learning Tower for Kitchen Counter, Kitchen Helper Stool for Toddlers 18+ Months - Solid Wood
40 Review

Pampers diapers New Baby Dry 2, 4-8 kg, 94 pcs., white
87 Review