Five pieces that fix the two small annoyances of owning a refillable sprayer: getting the oil in without wearing any of it, and remembering which bottle holds what. One twist-on funnel and four identification bands, sized for the Evo non-aerosol bottles you already have.
The funnel twists onto the neck rather than balancing in it, so it stays put while you pour from a heavy bulk bottle with your other hand. When it is not in use it hooks onto the neck of a bottle and stores there instead of rattling about in a drawer.
The bands are printed for the oils a kitchen actually keeps — canola, olive, coconut, avocado, peanut, sesame and vegetable, plus balsamic vinegar — and slip round a bottle in a second. Four of them means a bench of sprayers stops being a guessing game.
Made from silicone and from plastic that is free of BPA, latex and DEHP, so nothing in the set compromises the food-safe chain between the bulk bottle and the pan. Every piece is reusable and fully recyclable at the end.
Hand wash in warm, soapy water and let the parts dry before they go back on the bottle. That is the whole maintenance story: the pack exists to make a refillable sprayer easier to live with, not to add another thing to look after.