Contact Us

We’re a small team and we read every message. Expect a reply within one business day — usually same day.

General & order support

hello@cellstream.shop — product questions, order status, compatibility checks, the usual.

Returns & warranty

returns@cellstream.shop — for anything that arrived damaged, defective, or just isn’t the right fit. 30-day window, full refund to original payment method.

Wholesale & business

wholesale@cellstream.shop — if you’re a gym, IT shop, studio, or office looking to outfit a team, we do volume pricing on orders of 10+ of any single SKU.

Mailing address

Cellstream Co.
4812 N High Street, Suite 210
Columbus, OH 43214
United States

Support hours: Monday–Friday, 9am–6pm ET. We’re closed on U.S. federal holidays.