TOM BIHN Parental Unit
The TOM BIHN Parental Unit has a capacity of 13.5 L, per TOM BIHN. A 13.5-litre curved shoulder diaper bag made in Seattle with accordion-style front and back pockets and 10 O-rings for clipping gear.
- $220List price
- 13.5 LCapacity
How the Parental Unit stacks up
Against the 4 messenger and dad bags we track. The shaded band is where the middle half of them fall; the dot is this one.
Within the typical range for messenger and dad bags ($169 to $220).
What sets the Parental Unit apart
Measured against the 4 messenger and dad bags we compare, from each maker's published specs.
Next to its closest matches
- JuJuBe SatchelNext to it, the Parental Unit is 6.5 L less capacity; no stroller straps (the Satchel has it).
- Tactical Baby Gear DeuceNext to it, the Parental Unit is 10.8 L less capacity; $51 more; no stroller straps (the Deuce has it).
- JuJuBe Bestie Small MessengerNext to it, the Parental Unit is $145 more.
Does the Parental Unit fit a personal-item size?
As listed, the Parental Unit measures 16.1 × 7.9 × 9.6 in. It is within every listed personal-item size below on all three sides.
| Airline | Listed size | Longest side | Middle side | Shortest side |
|---|---|---|---|---|
| American, Spirit, Frontier, Allegiant | 18 × 14 × 8 in | 16.1 in: within 18 | 9.6 in: within 14 | 7.9 in: within 8 |
| JetBlue | 17 × 13 × 8 in | 16.1 in: within 17 | 9.6 in: within 13 | 7.9 in: within 8 |
Each side is checked against the matching side of the airline's published personal-item size, in inches as published. A soft bag can squeeze; a packed one may not.
What airlines say about diaper bags:
- American: “Diaper bags (1 per child)” Source
- Delta: “1 purse, briefcase, small backpack, belt bag, fanny pack, camera bag or diaper bag” Source
- JetBlue: “One diaper bag for lap infants” Source
- Frontier: “Adults with lap infants may bring a second personal item, like a diaper bag, at no charge” Source
- Allegiant: “Each fare-paying passenger traveling with an infant/child may travel with a diaper bag at no charge.” Source
- Breeze: “one (1) Infant bag per Infant, when traveling with an Infant;” Source
Quoted from each airline's page as of 2026-11-02.
Listed features
- Front and back accordion pockets, each with three open-top pockets
- Zippered divider in the main compartment
- 10 O-rings for key straps and pouches
- Made in Seattle; lifetime guarantee
Worth checking
- Stroller straps sold separately ($11)
- No changing pad listed in the box
- $220 regular price
Where to buy the Parental Unit
Prices and availability change. We may earn a commission from some links.
- Check for recalls: Search the agency's recall list with the model number and date code from the label: CPSC recall search.
Full specs
| TOM BIHN Parental Unit | |
|---|---|
| Type | Messenger |
| List price | $220 |
| Size | 16.1 × 7.9 × 9.6 in |
| Capacity | 13.5 L |
| Ways to carry | Shoulder, Crossbody, Handheld |
| Stroller straps | No |
| Material | Ballistic nylon or 420D Spectron exterior; 200D Halcyon nylon ripstop lining |
| Colors | 8 |
Compare the Parental Unit with
How each closest rival differs from the Parental Unit, from the makers' specs.
- JuJuBeSatchel14 pockets2.7 lb$220
- 6.5 L more capacity
- Tactical Baby GearDeuce3.1 lb$169$169
- 10.8 L more capacity
- $51 less
- JuJuBeBestie Small Messenger6 pockets1 lb$75
- $145 less
Parental Unit: questions answered
From TOM BIHN's published specs, last checked 2026-11-10.
How big is the TOM BIHN Parental Unit?
About 16.1 × 7.9 × 9.6 in (width × depth × height), with 13.5 L of space. A typical day bag holds 4 to 6 diapers, a travel pack of wipes, a changing pad, one spare outfit, a bottle or snack, and a small wet bag for messes.
Can the TOM BIHN Parental Unit hang on a stroller?
The maker does not list stroller straps. Universal stroller clips work with most bag handles.
Still wondering? Write to us at hello@cribpicks.com and we'll look it up.
Where these specs come from
Last checked 2026-11-10. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.