Replacement Seat Fabric with Harness for UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange)
Replacement Seat Fabric with Harness for UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange)
Product Highlights:
- What it is: The replacement seat cover with harness for the UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange) colorway.
- Keeps the swing in service: The Mamaroo is not used without the fabric seat cover.1 A spare seat cover keeps the swing available while the other one is laundered.
- Seatback fabric care: The seatback fabric is machine washed cold with mild detergent, no bleach, dried flat away from direct sunlight, and never ironed or dry cleaned.1
- Restraint system: Always use the restraint system and adjust it to fit snugly.1 The Mamaroo harness adjusts without rethreading.2
- Part number: 9925-MRO-STF-NA-STL. UPPAbaby specifies that only UPPAbaby replacement parts are used on the Mamaroo.1
What's Included:
- 1 x replacement seat fabric with harness for the UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange), part 9925-MRO-STF-NA-STL
- Not included: the Mamaroo Smart Swing, the newborn insert, the toy mobile and the power cord
Specifications:
| Product | Replacement seat fabric (seat cover) with harness |
|---|---|
| Brand | UPPAbaby Mamaroo1 |
| Part number | 9925-MRO-STF-NA-STL |
| Pacific Biomedical SKU | CHS-9925-MRO-STF-NA-STL |
| Fits | UPPAbaby Mamaroo Smart Swing in Stella (swing 2001-MRO-NA-STL); UPPAbaby lists the swing as model 2001-MRO-NA1 |
| Not for | mamaRoo models 1037 and 1046 |
| Color | Stella (Grey Melange) |
| Seatback fabric care | Machine wash cold, mild detergent, no bleach; dry flat away from direct sunlight; do not iron or dry clean1 |
| Swing use limits | Birth to 25 lb (11.3 kg) or about 9 months, whichever comes first; stop when baby attempts to climb out12 |
| Pack | 1 each |
Use Cases:
- Replacing a worn, stained or damaged Stella seat cover on an UPPAbaby Mamaroo Smart Swing1
- Keeping a spare seat cover so the swing stays available while the other one is laundered, since the swing is not used without its fabric seat cover1
- Restoring the harness with the seat cover, so the restraint system is in place for every use1
Related products:
- UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange)
- UPPAbaby Mamaroo Smart Swing, Jake (Charcoal Melange)
- mamaRoo newborn insert, grey plush
- Replacement seat fabric for the classic mamaRoo Model 1046, grey
- All mamaRoo swings, parts and hospital covers
Frequently Asked Questions:
Which mamaRoo replacement seat cover fits my swing?
This seat cover fits the UPPAbaby Mamaroo Smart Swing in Stella (Grey Melange), swing 2001-MRO-NA-STL, which UPPAbaby lists as model 2001-MRO-NA.1 For the classic mamaRoo Model 1046, see the grey seat fabric 2001028 or the black seat fabric 2001029.
Does the mamaRoo seat cover come with the harness straps?
Yes. Part 9925-MRO-STF-NA-STL is the seat fabric with harness. The swing, newborn insert, toy mobile and power cord are not included.
Can you wash the mamaRoo seat cover?
Yes. The seatback fabric is machine washed cold with mild detergent and no bleach, then dried flat away from direct sunlight before reuse or storage; do not iron or dry clean it.1
Can you wash the mamaRoo straps?
The UPPAbaby Mamaroo manual gives machine-wash care for the seatback fabric and infant insert and spot cleaning for the toy fabric, and it gives no machine-wash instruction for the harness.1 For harness cleaning questions, contact UPPAbaby at 1.844.823.3132.1
How do you remove and put on the mamaRoo seat cover?
The UPPAbaby Mamaroo manual illustrations show the seat fabric fitted over the seat, zipped along its edge and fastened at the snaps, with a final fastening step on the back.1 Removal runs the same steps in reverse. Put the seat cover back on before the next use, since the swing is never used without it.1
How do you adjust the mamaRoo straps?
Always use the restraint system and adjust it to fit snugly; the manual illustrates the shoulder strap height, strap length and buckle.1 The Mamaroo uses a no-rethread harness that adjusts as baby grows.2
Does this seat cover fit the mamaRoo 1037 or 1046?
No. This seat cover does not fit the mamaRoo 1037 or 1046; it is for the UPPAbaby Mamaroo Smart Swing, model 2001-MRO-NA.1 For the mamaRoo Model 1046, use the grey seat fabric 2001028 or the black seat fabric 2001029, with the 5-point harness 2001076 sold separately. For the 1037, contact Pacific Biomedical at 844.436.3526.
Is the mamaRoo recalled?
Some are. The August 15, 2022 CPSC recall covers the 4moms mamaRoo models that use a 3-point harness: versions 1.0 and 2.0 (model 4M-005), version 3.0 (model 1026) and version 4.0 (model 1037); the mamaRoo model that uses a 5-point harness is not included.3 The UPPAbaby Mamaroo Smart Swing, model 2001-MRO-NA, is not among the listed model numbers.13
Is the mamaRoo safe for sleeping?
No. The Mamaroo is not intended, designed, marketed or safe for sleep or unsupervised use. If baby falls asleep, remove baby as soon as possible and place baby on a firm, flat sleep surface such as a crib or bassinet.1
What is the mamaRoo weight limit?
25 lb (11.3 kg). Stop using the Mamaroo at 25 lb or when baby attempts to climb out, at about 9 months, whichever comes first.1
Does the mamaRoo come with an infant insert?
The UPPAbaby Mamaroo Smart Swing comes with a newborn support insert, along with the swing, AC adapter and toy mobile.2 The insert is for use up to about 4 months.1 This replacement seat cover does not include an insert; see the mamaRoo newborn insert.
How do I order by purchase order or get facility pricing?
Add it to your cart on this page, or contact CustomerService@pacificbiomedical.com or 844.436.3526 for a purchase order or facility pricing.
References
- UPPAbaby. Mamaroo Product Manual, Model 2001-MRO-NA. Rockland, MA: UPPAbaby; 2025:6-7, 12-13, 20-21, 26, back cover (seat fabric installation; harness adjustment; restraint system; do not use without the fabric seat cover; UPPAbaby-approved replacement parts only; not for sleep or unsupervised use; 25 lb or about 9 months; infant insert to about 4 months; fabric care; model 2001-MRO-NA; 1.844.823.3132). uppababy.com.
- UPPAbaby. Mamaroo Smart Swing (product page: machine-washable fabrics easy to remove, wash and reattach; no-rethread harness; birth to 25 lb or 9 months; included swing, AC adapter, toy mobile and newborn support insert). Accessed October 30, 2026. uppababy.com.
- US Consumer Product Safety Commission. 4moms Recalls More than 2 Million MamaRoo and RockaRoo Infant Swings and Rockers Due to Entanglement and Strangulation Hazards; One Death Reported. Recall 22-200. August 15, 2022. Accessed October 30, 2026. cpsc.gov.
Follow the UPPAbaby Mamaroo manual for seat fabric installation, harness adjustment and use limits. The Mamaroo is not for sleep or unsupervised use.1
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Replacement Seat Fabric with Harness for UPPAbaby Mamaroo Smart Swing, Stella (Grey Melange) CHS-9925-MRO-STF-NA-STL |
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$127.29 ea
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