🧬 Free shipping on orders over $75 · Guard What Works · 3D-Printed Precision Cases

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Three sizes. One job. Block every photon.

1 case available

Guard What Works.

The Duo Vial
Case
The Duo Vial

$14.99 $19.99
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Made to order. Ships within 3–5 business days.

Material
PETG — not HDPE, not ABS

The only common filament that stays dimensionally stable in a refrigerator and blocks visible light completely.

Opacity
100% light block

Every case is printed in opaque PETG. No gaps at the lid joint. No translucent walls. No exposure events.

Production
Made to order

No warehouse inventory. Every case is printed fresh. You receive a product that has never sat in degrading storage conditions.