Every order arrives beautifully presented with our luxury packaging:

A signature velvet pouch designed to protect your jewellery and be kept forever

A Promise Card ready for you to write your own special promise, to a loved one, a friend... yourself!

Thoughtful. Gift-ready. Worth paying for but included free.

Orders are shipped Monday–Friday.

Any orders placed after 1pm (MST) on Friday will not be shipped until Monday.

UK Shipping (from our UK warehouse)

Royal Mail 48 Hours: Delivery in 2 working days.

Royal Mail 24 Hours: Delivery in 1 working day (order before 1pm GMT to receive your parcel the next working day).

USA Shipping (from our USA warehouse)

Orders ship via DHL Express Domestic. Delivery takes 1–4 working days, depending on your shipping zone.

All tariffs and import fees are already covered by The Promise Ring Co. LTD, so there are no additional customs charges for US customers.

International Shipping (all other countries from our UK warehouse)

Europe: 2–11 business days.

Rest of the World (Canada, Australia, etc.): 3–17 business days.

Please note: Delivery times are estimates and may occasionally be extended due to customs delays, courier disruptions, or UK bank holidays.

Not sure on your sizing? Need to secretly measure for a loved one? Find our handy printable PDF.

US/Promise Co	Diameter (mm)	Circumference (mm)	UK	Europe
2	13.3	41.7	D ½	42
3	14.1	44.2	F ½	44
4	14.9	46.8	H ½	47
5	15.7	49.3	J ½	49.3
6	16.5	51.9	L ½	51.9
7	17.3	54.5	N ½	54.4
8	18.1	57	P ½	57
9	18.9	59.5	R ½	59.5
10	19.8	62.1	T ½	62.1
11	20.6	64.6	V ½	64.6
12	21.4	67.2	X ½	67.2
13	22.2	70	Z ½	70

Thin Band Promise Rings

Discover our Thin Bands collection - delicate, timeless rings designed for everyday wear. Perfect as stacking rings, promise rings, or minimalist wedding bands, each slim band is crafted to be subtle, elegant, and effortlessly versatile.