Frequently Asked Questions
Every ring is crafted in one of three materials: 925 sterling silver, brass, or stainless steel. All materials are independently lab-tested to EU REACH standards — free from harmful levels of nickel, lead, and cadmium.
Yes. Every ring is hypoallergenic and nickel-free per EU REACH testing. Customers with sensitive skin and nickel allergies wear them every day.
Spinning rings have an outer band that rotates freely with a flick of your finger — the most movement, the most satisfying spin.
Rotating rings turn with gentle resistance — a quieter, more controlled motion.
Adjustable rings have a band that slides to fit a range of finger sizes — easy to share or refit.
Anyone whose hands need a small motion to settle. Customers describe wearing them through long meetings, lectures, anxious moments, and end-of-day brain fog. Many mention ADHD, ADD, or just restless energy. The motion is silent and discreet — no one notices you're using it.
Every product page has a size guide. The simplest method at home: wrap a narrow strip of paper around the base of your finger, mark where it overlaps, measure the length in mm, and match it to our chart. Measure at the end of the day when your fingers are at their warmest.
Email hello@calmbyastrid.com with your order number and the size you need. We'll arrange a size exchange.
Our rings are designed for adult fingers, but our adjustable models work well for older children. For younger kids, the smallest fixed sizes (around size 6) may fit — measure first using the size guide on any product page.
Rinse with warm water and gently brush with a soft cloth or an old toothbrush. For sterling silver, a silver polish cloth refreshes the shine. Dry thoroughly before storing. Avoid harsh chemicals and abrasive cleaners.
Orders are dispatched within 24 hours and arrive in about 5–10 business days. You'll get a tracking link by email as soon as your order ships.
Shipping is a flat $5. It's free when your order has 2 or more items, or includes any bundle — the discount is applied automatically at checkout.
When your order ships, we email you a tracking link. If you don't see it within 24 hours, check your spam folder — sometimes it gets filtered there.
If your order hasn't shipped yet, email us right away and we'll update it. Once it's on its way, the address can't be changed — so reach out as soon as you spot the mistake.
First, check your spam folder. If it's not there, the email at checkout may have a typo — write to us with your name and approximate order time and we'll resend the confirmation to the right address.
Visa, Mastercard, Maestro, American Express, Apple Pay, Google Pay, Shop Pay, and Klarna. Available payment methods may vary slightly by region — you'll see what's available at checkout.
You have 30 days from the day you receive your order to return any item — unused and in its original packaging. To start a return, email hello@calmbyastrid.com.
Email hello@calmbyastrid.com with your order number and the size you'd like. We'll arrange the exchange and walk you through the next steps.
Yes. Email us with the model you'd like and we'll arrange the swap. Any price difference applies.
Email hello@calmbyastrid.com with your order number and a quick description (a photo helps). We reply within 24 hours and will sort it out — refund, replacement, or exchange — whatever fits your situation.
Yes — every ring comes with a 2-year warranty against manufacturing defects. Normal wear and tear isn't covered. If something's not right, email hello@calmbyastrid.com and we'll help.