How the Five Compare on the Numbers
The five picks differ most in capacity range and published weight. The Winproper 6-piece set covers 0.7 to 4.5 quarts, the broadest published range here. The Umite Chef 8-piece set covers 1.5 to 5 quarts. The Pyrex 3-pack covers 1.3 to 4.5 quarts. The Oggi set of four covers 0.7 to 4 quarts. The HANDIT 5-piece set covers 8 to 32 ounces, which is about 0.25 to 1 quart.
Published weight separates them further. Umite Chef is the lightest at 0.82 lb. HANDIT is 0.88 lb. Oggi is 1.81 lb. Cuisinart is 3.9 lb. Pyrex is the heaviest at 8.89 lb. None of the five publishes width, depth or height, so no footprint comparison is possible from the fact sheet.
The table does not tell you how the bowls feel in hand, how the lids seal after many washes, or how the stainless steel resists scratching over time. It also does not tell you the diameter of any bowl, because no maker publishes it. Those are the questions a store visit answers better than a fact sheet.
Lid Seals and What They Are Stated to Do
Airtight versus snap-on
Umite Chef, Winproper and Oggi all state airtight lids. HANDIT states snap-on lids. Pyrex states a tight fit. The wording differs, and none of the makers publishes a leak test result or a seal duration. What the fact sheet supports is only that each maker describes its lid as sealing, not how long that seal holds or whether it survives a tipped bag.
Two sets go further on lid design. Umite Chef and Winproper each state that the largest bowl has a removable section inside the main lid, so you can add contents or pair the bowl with a blender without taking off the whole lid. No other pick on this list describes that feature. That is a published difference, not a measured one.
Material and heat
Oggi states its bowls are microwave, freezer and dishwasher safe. Pyrex states its plastic lids are freezer, microwave and top-rack dishwasher safe, and does not state microwave safety for the glass bowls themselves. Umite Chef, Winproper and HANDIT state dishwasher and freezer safety but not microwave safety for the bowls.
Glass and stainless steel behave differently around heat and staining, but the fact sheet does not publish temperature limits for any of the five. A buyer who needs a specific heat tolerance will have to check the maker’s own documentation. The published facts here cover safe appliances, not temperature ranges.
Weight, Handling and Storage
What the published weights show
Umite Chef is the lightest of the five at 0.82 lb. HANDIT is 0.88 lb. Oggi is 1.81 lb. Cuisinart is 3.9 lb. Pyrex is the heaviest at 8.89 lb. Those figures are for the whole set as the maker publishes them, not for a single bowl, and they do not say how the weight is distributed across the sizes.
For a set that gets lifted off a high shelf often, the difference between 0.82 lb and 8.89 lb is the one number that matters most. For a set that stays on the counter, weight matters less than capacity and lid type. The fact sheet supports the comparison but not a recommendation about which weight is right for a given kitchen.
Nesting and footprint
All five state a nesting design. Umite Chef, Winproper, HANDIT, Oggi and Pyrex each describe bowls that stack inside one another. None publishes the nested height, the nested diameter or the footprint of the stack. That means the space-saving claim is stated by every maker and measurable for none of them from this sheet.
The practical consequence is that a buyer comparing drawer space cannot use the fact sheet to choose. Capacity range and weight are the two published figures that separate these sets. Everything about how small the stack gets is not published.
Which One Fits Your Kitchen
If you want the lightest set with grater attachments. The Umite Chef 8-piece set is 0.82 lb and includes three grater attachments. It covers 1.5 to 5 quarts, so it skips the smallest sizes.
If you need the broadest capacity range. The Winproper 6-piece set covers 0.7 to 4.5 quarts and includes three grater attachments. No weight is published for it.
If you store small portions. The HANDIT 5-piece set runs 8 to 32 ounces with snap-on lids. It is 0.88 lb and has no capacity above 32 ounces.
If you want plastic for four. The Oggi set of four covers 0.7 to 4 quarts with clear airtight lids and a ribbed base. It is 1.81 lb.
If you want glass. The Pyrex 3-pack covers 1.3 to 4.5 quarts with plastic lids. It is the heaviest at 8.89 lb and has the fewest bowls.
What We Could Not Verify
Several figures a buyer would want are not published by any of the five makers.
- Width, depth and height for every pick.
- The diameter of any individual bowl.
- The nested height or footprint of any set.
- A weight for the Winproper 6-piece set.
- Temperature limits for any bowl or lid.
- How long any lid seal is stated to last.