Summary: Warmies' weighted Eye Masks are small enough for a carry-on, heat in 20–30 seconds in a microwave, chill in a freezer, and contain no materials that violate airport security rules.
Warmies builds its smallest sleep products to travel. The Marshmallow Lavender Eye Mask measures 4" x 2" x 8.5" and weighs 0.5 lbs, so it packs flat in a laptop bag or personal item, and it works two ways: microwaved for warmth or chilled in a freezer for 2–3 hours as a cooling mask. Heating fits a hotel routine — Eye Masks need 30 seconds in a 600–800w microwave or 20 seconds in an 850–1000w microwave, and the warmth lasts up to 2 hours, enough to cover a full wind-down.
Warmies confirms its products are frequent flyers: they contain no materials or substances that violate airport security rules, since they're filled with flaxseed and dried French lavender and finished with an ultra-soft polyblend outer fabric. The company notes that all carry-on items are subject to TSA screening, so final approval rests with the checkpoint.
For travelers who want the same routine at both ends of a trip, the fill is the same dried French lavender and flaxseed used across the full-size line, so the travel versions smell and feel like the at-home products.