SINGLE
PAIR
Free Shipping Over $75
365-Day Guarantee
4.6 Star Reviews
Sleep Friendly
Hypoallergenic
Waterproof
DESCRIPTION
A little love, a little mystery. The Heart Lock Flat Back Stud is giving secret notes, diary keys, and nostalgia vibes. It might just be the key to your dream stack.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of shape is 3.5x5.5mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365 DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority!
LIGHTNING FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
SINGLE
PAIR
Free Shipping Over $75
365-Day Guarantee
4.6 Star Reviews
Sleep-Friendly
Hypoallergenic
Waterproof
DESCRIPTION
A little love, a little mystery. The Heart Lock Flat Back Stud is giving secret notes, diary keys, and nostalgia vibes. It might just be the key to your dream stack.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of shape is 3.5x5.5mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365-DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority!
LIGHTNING-FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
Trusted by over 250,000 happy customers.
SINGLE
PAIR
Sleep-Friendly
Hypoallergenic
Waterproof
DESCRIPTION
A little love, a little mystery. The Heart Lock Flat Back Stud is giving secret notes, diary keys, and nostalgia vibes. It might just be the key to your dream stack.
- 18 GA (1mm)
- Post is 1/4 inch (6mm) in length, with a 4mm disc on back.
- Approx. size of shape is 3.5x5.5mm. Refer to listing images to get an idea of the size of the stud on-ear. Check your own ear measurement before ordering
CARE
Soak your studs in a bowl filled with warm water and a few drops of dish soap for about 15 minutes.
Gently scrub your jewelry with a q tip or soft cloth to remove any buildup or debris.
Store in a safe place when not in use.
Handle with care.
365-DAY GUARANTEE
At Cords Club, we are committed to providing durable and high-quality products. That's why we offer a 365 Day Guarantee on all our items. If you experience any defects or issues within the first year, simply contact us for a hassle-free replacement. Enjoy peace of mind and shop with confidence knowing that your satisfaction is our top priority. Try CordsClub risk-free today!
LIGHTNING-FAST SHIPPING
Our dedicated in-house shipping team carefully packs and ships your orders within 4 business days. We often ship even sooner, but during peak launches or especially busy times, we appreaciate your patience as we do our best to stay within this timeframe. Every order is handled with care from start to finish, so you can shop confidently knowing your pieces will reach you safely.
Free Shipping
Over $75
365-Day
Guarantee
Highly
Reviewed
Trusted by Over a Quarter Million Happy Ears
Tia C.
Verified Customer
Perfect for almost any piercing! I’ll use it elsewhere once I add more piercings to my ears! Love!!
Amanda H.
Verified Customer
Everyone needs this one!!!
This tiny bow is so dainty and cute! Perfect size for my stacked lobe
Alison B.
Verified Customer
Looks so cute in my forward helix! Will likely get another one for my newest forward helix, I love her!
Andrea S.
Verified Customer
I wear these almost everyday. They're cute but also lightweight so I don't feel like they're stretching my ears at all
Briana C.
Verified Customer
Sparkly!! Gorgeous little hoops!
They shine super bright, and are
super comfortable!
4 Reasons Why
You Need Cords Club Flat Backs
in your life
Reason #1:
Comfort
Sleep-proof, won’t poke you, and can be worn all day and night
Reason #2:
Happy Piercings
Made from implant-grade materials that are perfect for sensitive ears
Reason #3:
No Green Skin
Waterproof, tarnish-proof jewelry that’s been tested and designed to last
Reason #4:
You + Cords Club
Join a collaborative, stylish club and share your jewelry ideas with us!
Reason #1:
Comfort
Sleep-proof, won’t poke you, and can be worn all day and night
Reason #2:
Happy Piercings
Made from implant-grade materials that are perfect for sensitive ears
Reason #3:
No Green Skin
Waterproof, tarnish-proof jewelry that’s been tested and designed to last
Reason #4:
You + Cords Club
Join a collaborative, stylish club and share your jewelry ideas with us!
Frequently Asked Question
We’ve got answers to all your Cords Club questions, from shipping to stacking.
I'm new to flat backs. What is the most important thing for me to know?
The first thing you'll want to learn is how to keep your Flat Backs nice and secure. Just like you'd tie your running shoes to make sure they stay on your feet for a run, you'll need to adjust your Flat Backs to keep them in place, too!
But don't worry! It's an easy peasy process, and we'll help you through the learning curve. <3
Here are a few resources to get you started:
* Review the Flat Back tips and tricks info guide included with your order
* Check out this helpful playlist of how-to videos
* Connect with our customer service team for personalized help
What size are the flat back earrings?
Cords Club's Flat Backs are 18 gauge and come with a 6mm long Flat Back post.
A 6mm post is a great length for most people, so we d recommend starting there!
We do also have a range of other sizes available and sold separately. If you have questions about sizing, we'd love to help!
Are your flat backs sold individually? Or in pairs?
Our Flat Backs are sold individually, so make sure to add 2 to your cart if you'd like a pair!
Do I need to buy the flat back applicator, too?
Our Flat Back Applicator is a great tool but it's not necessary! The Flat Back Applicator is designed to help make the process of changing your flat backs faster and easier, but you can definitely change your earrings without one. The choice is totally up to you!
Our Everyday Prices
are their Black Friday Prices
Moon Flat Back Stud - Compared Across 4 Brands
CORDS CLUB
$15
Moon Flat Back - Single
COMPETITOR AVG.
$36
Moon Flat Back - Single
Single Stud
Pair of Studs
Material
Hypoallergenic
Nickel-Free
Warranty
CORDS CLUB
$15
our price
$30
$27
$30
our price
ASTM F136 Titanium
ASTM F136
Titanium
365-day
BRAND A
$30
2.0x more
$60
2.0x more
ASTM F136 Titanium
ASTM F136
Titanium
none
Final Sale - no recourse
BRAND B
$38
2.5x more
$76
2.5x more
ASTM F136 Titanium
ASTM F136
Titanium
30-day
$10 fee
BRAND C
$40
2.7x more
$80
2.7x more
ASTM F136 Titanium
ASTM F136
Titanium
365-day
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Comfortable For 24/7 Wear
Sleep, Shower, And Workout Friendly
Hypoallergenic And Nickel Free
Lightweight And Secure
Apply Your Flat Back Studs In Seconds
New to flat backs? Watch our videos to see how simple they are to apply.
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SHOP BEST SELLERS
Highly Recommended for Sensitive Ears
- Courtney S.Verified Buyer2 hours agoRated 4 out of 5 starsCute but wants to be upside down
Cute but flips upside down a lot.
CCCords Club2 hours agoHi Courtney! 😊
We're so glad you think the Heart Lock Flat Back Stud is cute! ✨ We totally get the frustration with it wanting to flip upside down though — that can be really annoying when you want it to sit just right! 😭 The heart shape can sometimes make it a bit top-heavy, which might be causing the flipping issue. We really appreciate you sharing this feedback because it helps us understand how the design performs in real life! It sounds like you're still loving the overall look despite the positioning quirk, which is awesome! Thanks for the honest review about how it wears!
- JM with Cords Club
- Crystal B.3 weeks agoRated 5 out of 5 starsDainty touch of gold!
This is the cutest, daintiest little heart locket ever! It’s just the perfect sized locket for my cartilage!
CCCords Club3 weeks agoHi Crystal!
It sounds like it's the perfect fit for your cartilage — there's nothing better than finding that ideal piece that's just the right size and adds that sweet touch of gold you're looking for. Thank you for sharing your love for this little heart! 💛
🎉 Jace with Cords Club - Vanessa H.Verified Buyer1 month agoRated 5 out of 5 starsCute!
So cute! I purchased the “wrong” key to go with it and it still looks adorable.
CCCords Club1 month agoHi Vanessa! So glad you’re loving it! ✨ Even with the “wrong” key, it sounds absolutely adorable 💖
✨ Jace with Cords Club - Jade F.Verified Buyer1 month agoRated 5 out of 5 starsLove it
This stud is adorable. I love how they come as a single earring so I can mix and match whatever I want. As always the quality is excellent and never irritate my sensitive ears.
CCCords Club1 month agoHi Jade!
Love to hear this! 💖 We're so thrilled you're loving the Heart Lock Flat Back Stud—and yes, the single earring option is such a game changer for mix and matching! ✨ It sounds like you've discovered one of our favorite things about these cuties—they're perfect for creating your own unique ear stack combinations! And we're so happy to hear they're working perfectly with your sensitive ears—that's always our top priority! 🫶🏼
😘~ Elvie with Cords Club
- Brittany S.Verified Buyer5 months agoRated 5 out of 5 starsSo tiny but detailed
The stud is very tiny but it has amazing detail and looks great on!
CCCords Club5 months agoHi Brittany!
The Heart Lock Flat Back Stud really is a tiny treasure! We love that all those intricate details still shine through even at such a petite size. It's amazing how something so small can make such a sweet statement in your ear stack. Thanks for the wonderful review!
– JM with Cords Club
Top-Tier Customer Service
Have questions? Our amazing in-house customer service team is ready to answer them!
10,000+ Verified 5-Star Reviews
Loved by thousands of happy ears (and counting).
Fast & Secure Shipping
Get your orders ASAP. Our in-house shipping team packs all orders within 1-2 business days!
365-Day Warranty
We stand by every Cords Club product’s durability & quality. Try risk free, today!
Love Flat Backs?
Two Studs for the Price of One. Every Month.
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have a question?
Check out our FAQ page for answers to our most frequently asked questions and to contact us!