Verdict: The Mockingbird Single-to-Double is the better all-around stroller; the Doona Liki Trike S5 is a genuinely fun product for toddlers who are developmentally ready to ride.
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Winner: Mockingbird Single-to-Double
Spec-by-spec comparison
Doona Liki Trike S5
Mockingbird Single To Double
Weight
13.4 lbs
26.5 lbs
Age Range
10 months – 3 years
Birth – 4+ years
Newborn Ready
No
Yes (infant insert)
Sibling Capable
No
Yes (Second Seat $175)
Folded Size
24 x 16 x 12 in
26 x 21 x 16 in
Price
~$450
~$525 (single)
Doona Liki Trike S5
What works
Light at 13.4 lbs and compact fold — practical for apartment storage
Engages toddlers who resist sitting in conventional strollers
Transitions from parent-push to independent pedaling as child develops
What doesn't
Not a stroller replacement — you'll still need a stroller for longer trips
Only useful from ~10 months to ~36 months
At $450, it's a supplemental purchase on top of a primary stroller
Mockingbird Single To Double
What works
Full stroller from birth to 3+ years with infant insert included
Second Seat accessory ($175) adds double configuration for sibling
One-step standing fold — a quality-of-life win at this price
What doesn't
26.5 lbs is manageable but not light
1-year warranty is short for a $525+ stroller
Second Seat is an extra $175 — plan total cost as $700 for the full system