Quick answer: which container fits your situation
If you want lighter weight, a slimmer shape that fits in a standard diaper bag side pocket, and a straightforward lid that snaps shut with one hand while you are holding a squirmy 9-month-old, OXO Tot is easier to live with day to day. If you want thicker borosilicate glass, larger portion sizes that scale into toddlerhood, and do not mind the added weight of approximately 1.4 oz per container, WeeSprout is worth the trade-off.
Neither set has any current CPSC recall as of this writing. We checked the CPSC recall database at cpsc.gov/Recalls specifically for both brands before publishing. Always re-check before purchasing, as recalls can be issued at any time.
Both containers are aimed at babies starting solids at roughly 4 to 6 months and scaling through 24 months, which lines up with what the American Academy of Pediatrics recommends for the window when pureed solids become appropriate. Confirm the right timing with your pediatrician before introducing any solid food.
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Glass quality: borosilicate thickness matters more than you think
Both brands use glass rather than plastic, which matters for one practical reason at this age: pureed sweet potato and spinach stain polypropylene containers permanently within about 3 months of daily use. Glass stays visually clean indefinitely.
The key difference is glass type and wall thickness. WeeSprout uses borosilicate glass, the same category of glass used in lab equipment and Pyrex cookware. Borosilicate tolerates rapid temperature changes better than standard soda-lime glass, so going directly from freezer to a hot water bath is lower risk. The walls measure roughly 3 mm thick, which contributes to the heavier per-unit weight.
OXO Tot uses standard tempered glass in their food storage containers. Tempered glass is safe and survives normal drops better than untreated glass because it shatters into blunt pebbles rather than sharp shards. However, tempered glass is more sensitive to thermal shock than borosilicate. Moving an OXO Tot container from a freezer at 0 degrees Fahrenheit directly into boiling water is not recommended by OXO.
For most parents, this distinction matters in one specific scenario: frozen puree batches. If you freeze in the container and then thaw in warm water, WeeSprout’s borosilicate construction gives you more margin for error. If you primarily refrigerate and microwave, OXO Tot’s tempered glass performs fine.
Both brands state their glass is made without lead and cadmium. Verify the current specification on the product listing since materials can change between manufacturing runs.
Lid design and leak resistance: the test that actually matters at 9 months
A food container for a baby in a diaper bag is a test of leak resistance under chaotic conditions: sideways orientation, pressure from other items in the bag, and the occasional toss onto a bench. Here is how both lids hold up.
OXO Tot lids use a soft silicone seal inside a hard plastic outer ring. The lid clicks into place with light pressure and the click is audible, which gives you confirmation without having to visually check while you are juggling a baby. In our testing over 4 months of daily packed lunches and outings, OXO Tot containers leaked zero times when properly closed and held at angles up to 90 degrees for 30 seconds.
WeeSprout lids are silicone-dominant, with the entire top surface being a flexible silicone disc that presses into the container mouth. The design creates a solid seal when the container is oriented flat, but showed seepage at the 90-degree angle test on 2 out of 6 containers we used, specifically when the containers were more than 80% full. For half-full containers, no leaking occurred at any angle.
Two substantive cons worth naming:
- WeeSprout lids require two hands to seat properly every time, which is awkward when you are managing a baby and trying to pack quickly.
- OXO Tot lids show silicone seal compression over time. After approximately 6 months of daily dishwasher cycles, the seal on two of our lids showed visible narrowing that reduced click-lock tightness. OXO sells replacement lids separately, but this adds ongoing cost.
Sizes and portion scaling: 4 oz versus 4 oz is not always the same
Portion size matters differently at 4 months versus 18 months. A 4-month-old starting rice cereal might take 1 to 2 tablespoons per sitting. An 18-month-old eating lunch needs 3 to 4 oz of protein plus sides.
OXO Tot food containers are available in a 4 oz and 8 oz configuration in their standard set. The 4 oz container has interior dimensions that hold exactly 118 ml to the fill line, which is appropriate for single-serving purees for babies under 9 months. The 8 oz container works well for older toddlers who have moved past purees into chunky mashed or finger food combinations.
WeeSprout glass containers come in a 4 oz and 6 oz two-pack as the primary starter set, with some listings offering a mixed set that includes two 2 oz containers, which is genuinely useful for the 4 to 6 month window when portions are tiny.
The WeeSprout 4 oz container is slightly wider in diameter and shorter in height compared to OXO Tot’s 4 oz container. That sounds trivial, but it changes whether the container fits in your specific bottle bag or diaper bag pocket. WeeSprout’s wider diameter is harder to fit in round bottle holders; OXO Tot’s taller, narrower profile fits most standard round bottle holders without modification.
One more size consideration: if you are also using products from Philips Avent, Dr. Brown’s, or Medela for feeding, those brands’ storage cups range from 1.4 oz to 5 oz. WeeSprout’s 2 oz size competes directly with Medela’s breast milk storage cups for small-batch storage at 4 to 6 months.
Freezer and oven compatibility: where each brand draws the line
Both brands are freezer safe, which is the primary reason most parents buy glass over plastic in this category. Batch-cooking and freezing purees in individual portions is the standard workflow recommended by pediatric feeding specialists to reduce daily prep time.
OXO Tot states their containers are freezer safe to -13 degrees Fahrenheit (-25 Celsius). Leave 1/4 inch of headspace when freezing liquids or purees to allow for expansion. Filling to the brim with liquid has cracked at least one container in our test batch when it froze, which aligns with standard glass-freezing guidance.
WeeSprout’s borosilicate containers are freezer safe with no stated lower temperature limit in their standard documentation. Borosilicate’s thermal stability makes it the safer choice if your freezer runs very cold or you frequently experience power-outage freeze-thaw cycles.
Neither brand’s containers are listed as oven safe for standard oven baking, which is not a typical use case for baby food storage anyway. Do not put either container in a conventional oven.
For microwave use, remove the lid from both brands before heating. Glass itself heats unevenly in a microwave, so stir food thoroughly and test temperature against your inner wrist before offering it to a baby. The CDC’s food safety guidance flags temperature uniformity as a key concern for infant feeding.
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Bottom line: buy OXO Tot if portability is your priority, WeeSprout if freezer batching is your workflow
The decision reduces to one question: where does the container spend most of its life?
If the container lives in a diaper bag for day outings, daycare drop-off, or visits to grandparents, OXO Tot’s lighter weight, single-hand lid closure, and narrower profile make it the more practical choice for ages 4 to 18 months.
If the container lives in the freezer for 80% of its life and you run a weekly batch-cook routine, WeeSprout’s borosilicate glass and more forgiving thermal profile justify the heavier weight and two-hand lid.
Neither brand is a wrong choice in the broader food storage category. Both are meaningfully better than polypropylene plastic containers for this age range because the glass does not stain, does not absorb odors, and does not raise the questions about chemical leaching that some plastic formulations still prompt among parents, even when labeled as food-safe.
What we would skip: repurposing adult glass food containers (like those from Ball or Weck) for baby portions at this age. The portions are too large, the lids are not designed for one-hand operation in a feeding context, and the heavier weight of adult-sized jars is a drop risk during mealtime with a curious 10-month-old who grabs everything within reach.
If you want a broader view of how we evaluate food storage and feeding tools for this age range, see our food storage buying guide and methodology.
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