Head to head
Glasslock vs Pyrex Simply Store (2026)
Glasslock vs Pyrex Simply Store: locking oven-safe glass against simple value glass, compared honestly.
#5 in our rankings · Best oven-safe glass
Glasslock Glasslock Oven Safe Container Set, 18-Piece
Best for: Cooks who bake, store, and reheat in the same dish and want locking lids that survive transport.
#4 in our rankings · Best value glass
Pyrex Simply Store Glass Food Storage Containers, 8-Pack
Best for: Everyday leftover storage and meal prep in glass, at a sensible outlay, especially in households that reheat in the microwave.
Our recommendation
Buy Glasslock if you bake and store in the same dish, or you carry glass boxes in a bag and need locking lids. Buy Pyrex Simply Store if you want simple, affordable glass for fridge storage and microwave reheating, and your boxes mostly stay upright at home. Glasslock is the versatile cook's set; Pyrex is the sensible everyday set.
Lids and transport
Glasslock locks on four sides with a silicone seal, making it genuinely bag-safe for saucy food. Pyrex uses snug-fit lids that are fine for upright fridge storage but should not be trusted tipped in a bag with liquids.
Oven use
Glasslock bases are oven safe, so baking and storing share one dish. Pyrex glass is heat tolerant for microwave reheating, but the set is positioned as storage and reheating glass rather than a bake-and-store system.
Shapes and simplicity
Pyrex rounds are simple, easy to clean, and reheat evenly, but waste some shelf space. Glasslock mixes rectangles and rounds, packing shelves better while adding hinge care to the washing routine.
Choose Glasslock Glasslock Oven Safe Container Set, 18-Piece if…
- You bake and store in the same dish
- You carry glass boxes in a bag
- You want locking lids for saucy food
Choose Pyrex Simply Store Glass Food Storage Containers, 8-Pack if…
- You want the simplest, cheapest glass set
- Your boxes stay upright in the fridge
- You reheat in the microwave rather than baking
Spec-by-spec comparison
| Spec | Glasslock Glasslock Oven Safe Container Set, 18-Piece | Pyrex Simply Store Glass Food Storage Containers, 8-Pack |
|---|---|---|
| Price tier | Mid-range | Mid-range |
| Material | Tempered glass with BPA-free locking lids | Glass dishes with BPA-free plastic lids |
| Set contents | 18 pieces, assorted rectangular and round containers with lids | 8 containers with lids, 2 each of 1, 2, 4, and 7 cup rounds |
| Seal | Four-hinge locking lids with silicone gasket | - |
| Use | Oven, microwave, freezer, and dishwasher safe | - |
| Origin | Glass made from silica, soda ash, and limestone | - |
| Shape | - | Round |
| Care | - | Dishwasher, microwave, and freezer safe |
| Lid type | - | Snug-fit plastic lids, red |
| Best for | Cooks who bake, store, and reheat in the same dish and want locking lids that survive transport. | Everyday leftover storage and meal prep in glass, at a sensible outlay, especially in households that reheat in the microwave. |
| Skip if | You want the lightest possible lunch kit, or you need very large family-size boxes. | You need leak-proof lids for bag transport, or you want rectangular shapes for fridge shelf packing. |
Strengths and limitations
Glasslock Glasslock Oven Safe Container Set, 18-Piece
Strengths
- Tempered glass bases are oven safe, so leftovers can be baked and stored in the same container with no transfer step.
- Four-hinge locking lids with a silicone seal close firmly and resist leaks far better than press-on lids.
- The assorted rectangular and round shapes pack a fridge shelf efficiently and cover most leftover sizes.
Limitations
- Glass bases are heavy, so a full set in one bag is a load, and the boxes need careful stacking to avoid chipping rims.
- Locking lids have hinges and seals that need washing and drying thoroughly to stay odour free.
- The glass is heat tolerant but not unbreakable, so thermal shock from extreme temperature swings should be avoided.
Pyrex Simply Store Glass Food Storage Containers, 8-Pack
Strengths
- Round glass dishes reheat evenly in the microwave and go from fridge to table without a second dish.
- Four sizes, from 1 cup to 7 cup, cover snacks, sides, and family-size leftovers without awkward gaps.
- Glass does not absorb stains or smells, so tomato sauces and curries leave no trace after washing.
Limitations
- The snug-fit lids are not locking lids, so the set is less suited to tipping inside a bag than latching rivals.
- Round shapes waste some fridge shelf space compared with rectangular boxes that pack edge to edge.
- Lids are plastic and must stay out of the oven, even though the glass dishes themselves are heat tolerant.
How they fit the wider field
- Glasslock Glasslock Oven Safe Container Set, 18-Piece: ranked #5 (Best oven-safe glass) in The Best Food Storage Containers. Read the full Glasslock Glasslock Oven Safe Container Set, 18-Piece review.
- Pyrex Simply Store Glass Food Storage Containers, 8-Pack: ranked #4 (Best value glass) in The Best Food Storage Containers.
Neither one quite right? The full rankings cover 10 picks matched to different buyers.
Made your call?
Questions, answered
Which glass is more durable?
Both use sturdy glass, but Glasslock tempered glass is built for oven use and wider temperature swings, while Pyrex glass is built for everyday storage and microwave reheating. Neither is unbreakable, and both need care against drops and thermal shock.
Which lids last longer?
Pyrex snug-fit lids have fewer moving parts and less to wear out, while Glasslock hinges need care but give a far better seal. A Pyrex lid may outlast a Glasslock hinge, but a Glasslock lid protects food better while it lasts.
Can I use both brands together?
Yes, and the combination works well: Pyrex rounds for everyday fridge storage, Glasslock boxes for baking, transport, and saucy dishes. Lids do not interchange, so keep each brand's lids with its own bases.