#16 of 16

Glasslock 18-Piece Assorted Oven Safe Container Set

Key Specs

Price

$44.99 USD

Container Material

Soda Lime Glass

Lid Material

Food Grade Pp

Max Oven Temperature

450°F

Glasslock

Glasslock 18-Piece Assorted Oven Safe Container Set

#16 of 16 food storage containers tested

5.9R3 Score / 10

There are better options - here's why.

Safety

5.794% weight

Efficacy

7.36% weight

Usability

8.61% weight

$44.99

The bottom line

What the product listing won't tell you

Know before you buy

The polypropylene lids are the weakest link — Glasslock has not disclosed PFAS-free status for the lid gasket material, and the specific plastic formulation beyond "BPA-free" is not detailed.

Buy it if

You want glass containers with genuinely leakproof lids for transporting lunches and soups

Buy on Amazon

We may earn a commission. It doesn't affect our scores.

You need an affordable 9-container glass set under $50 for meal prep

You regularly move containers from fridge to oven — these handle 450°F

You prefer everything to go in the dishwasher without exception

Skip if

You want to eliminate all plastic from your food storage — the PP lids are direct food-contact surfaces
You need one-handed lid operation — the 4-tab locking system requires two hands
You specifically need PFAS-free verification on lid gaskets

What's inside

Specs the product listing doesn't explain

Safety & Materials

What your food and family come into contact with every use

Container MaterialSoda Lime Glass

Lid MaterialFood Grade Pp

Dishwasher SafeYes

BPA-FreeYes

Efficacy

What determines how well this performs its core job

Max Oven Temperature450°F

Usability

Ease of use, maintenance, and longevity

Price$44.99 USD

Seal TypeLocking Clips

Price Per Piece$5.00 USD

How we scored it

3 criteria - open any layer to see exactly what we found

5.7

Safety

Good

7.3

Efficacy

Excellent

8.6

Usability

Good

Material SafetyCritical

94%

8.0▾

R3 Verdict

The tempered soda-lime glass container body is chemically inert and FDA-approved — a safe and proven material for food contact. The polypropylene lids earn a lower score because while PP is BPA-free by nature, Glasslock has not published PFAS-free testing for the silicone gasket component.

Criteria

Container Body Material

9/10

Tempered soda-lime glass is chemically inert and FDA-approved — no chemicals leach into your food. Slightly more susceptible to thermal shock than borosilicate but perfectly safe for daily use.

Lid Material

7/10

Food-grade polypropylene lids are FDA-approved and BPA-free by nature — a solid choice, though not as inert as silicone or glass lid materials.

BPA-Free

Functional PerformanceImportant

10▾

R3 Verdict

Glasslock earns the top functional score. The 4-tab locking clips with silicone gasket create a genuinely airtight, leakproof seal — validated by expert reviewers at Serious Eats. Combined with 450°F oven safety, these handle the full fridge-to-oven-to-table workflow.

Criteria

Oven-Safe Maximum Temperature

10/10

Daily UsabilityNice to have

8.0▾

R3 Verdict

Both containers and lids are fully dishwasher safe, eliminating the hand-wash burden. The 4-tab locking mechanism is secure but requires two hands to open and close — a minor daily friction point that some families find frustrating for quick refrigerator access.

Criteria

Dishwasher Safe

10/10

Both glass containers and polypropylene lids are fully dishwasher safe — no hand-wash components.

Where to buy

Verified retailer - current pricing

Starting price

$44.99

R3 approved retailer Score unaffected by purchase

Buy on Amazon

We earn a small commission on purchases. It never influences our scores - R3 is funded by readers, not brands.

Other Options to Consider

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#16 of 16 food storage containers reviewed

Confirmed BPA-free across both the glass containers and polypropylene lids.

PFAS-Free Lid Seal

5/10

Glasslock has not published PFAS-free testing for the lid silicone gaskets — a transparency gap but not unusual in 2026.

Oven-safe to 450°F via TEMPERMAX tempering technology — full versatility from fridge to oven.

Seal Type

10/10

The 4-tab locking clip system with integrated silicone gasket is the most leak-resistant design tested by expert reviewers — ideal for transporting soups and liquids.

Lid Mechanism Ease

6/10

The 4-tab locking design is very secure but requires snapping all four sides with two hands — slower than press-fit or one-handed snap designs.

Stackable Design

10/10

Containers stack with lids on and nest with lids off — though the mixed shapes (round, square, rectangle) are less space-efficient than uniform sets.