• THE UNPLASTIC SHOP
  • THE UNPLASTIC SHOP
  • THE UNPLASTIC SHOP
The Black + Blum Steel Food Box is a rectangular, microwaveable stainless steel lunch box with a transparent lid and red vent, offering convenient, leakproof meal storage. Text graphic reads: The Unplastic Shop. Curated by the Oceanic Preservation Society — the production team behind The Plastic Detox, now streaming worldwide — to reduce plastic exposure where it matters most. The Black + Blum Steel Food Box is a rectangular stainless steel container with a matching gray plastic lid and red silicone seal, shown open beside the box—perfect for leakproof food storage. A hand puts a Black + Blum Steel Food Box with a plastic lid into a microwave. The text “MICROWAVE-SAFE STEEL” appears at the bottom of the image. A close-up of a red car door lock switch, with black and red padlock icons, shows detail reminiscent of the precision in the Black + Blum Steel Food Box. The switch is set into a gray surface.
Beyond Plastic No Single Use Plastic
The Black + Blum Steel Food Box is a rectangular, microwaveable stainless steel lunch box with a transparent lid and red vent, offering convenient, leakproof meal storage.

Black + Blum Meal Prep Stainless Steel Food Box

1 item

Why we love it

  • A high-impact upgrade for reducing plastic exposure in your daily routine.
  • Free from 3,000+ banned ingredients and meets our EU-informed standards.
  • Durable design built for long-term daily use.
  • Convenient all-in-one function for meals on the go.
  • Airtight seal keeps food fresh and prevents leaks.
$23.95 $23.95 Save 0%

Meal Prep Stainless Steel Food Box $23.95

Free carbon neutral shipping on orders $29+. Arrives in 3–5 days. Free, easy 30-day returns.

These microwavable meal prep steel boxes are leak proof, dishwasher and oven-safe, and come in a range of sizes for breakfast, lunch, and everything in between. Lightweight, airtight and durable, they are perfect for meal prep, food storage, or simply eating on-the-go. Choose between small, medium and large sizes for different meal types or portion control.

Various sizes: Small: 20 fl oz, Medium 30 fl oz, Large 40 fl oz

    • Innovative microwave-safe steel box

    • Leak proof + airtight vacuum-sealed lid lock keeps food fresher for longer

    • Compact storage: All boxes and lids are stackable

    • Semi-transparent silicone lid to see your meals clearly

    • Dishwasher/Oven(exc. lid)/Freezer-safe

    • Easy-clean: fully removable seals

    • High performance: lid lock vent means lid can stay on when microwaving which reduces heat time (compared with other stainless steel containers), and prevents splattering (no need for single-use cling film)

    • Multifunction: meal prep, food storage, on-the-go lunch box, oven container

    • BPA-Free

    18/8 (304) stainless steel, Silicone, Polypropylene

    All parts are dishwasher safe. Lid on the top rack only. Handwashing will prolong the lifespan of the product.

    Grove Values

    More from The Unplastic Shop

    Shop The Unplastic Shop
    A collection of eco-friendly household items including a metal lunchbox, reusable bamboo utensils, toothpaste tablets, bamboo toothbrush, dish scrub, cleaning cubes, dish soap, and colored pencils, all arranged on a wooden board.
    The unplastic shop

    Curated to reduce plastic exposure where it matters most

    Everything in this shop meets expert-backed criteria developed with the Oceanic Preservation Society — prioritizing reduced plastic where it counts most.

    ✓ Plastic never touches anything you ingest

    ✓ Free from BPA and all “BP” alternatives

    ✓ Free from PFAS and other “forever chemicals”

    ✓ Selected to avoid endocrine-disrupting chemicals (EDCs) and other chemicals associated with hormone disruption

    Download the Standards
    A flat lay of powdered ingredients, gummy candies, a glass of pink liquid, a gold spoon with powder, and a container with an orange slice label, all on a pastel green background.

    Grove Collaborative

    10,000+ ingredients reviewed. 3,000+ banned outright.

    Our most comprehensive standards yet — across your whole home.

    Explore Our EU-Informed Ingredient Standards