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Bra sizing is determined by band size and cup size.
Step 1: Measure Your Band Measure by wrapping a soft measuring tape around your ribcage, directly under the bust.
If the measurement is odd, add 5.
If the measurement is even, add 4.
Example
31 inches + 5 = 36 band
32 inches + 4 = 36 band
Step 2: Measure Your Bust
Measure around the fullest part of the bust, keeping the tape level.
Subtract your band size from this measurement to determine cup size.
Example
39 inches − 36 band = 3 inches
3 inches = C cup
Your size would be 36C.
Detailed size guides are available on our Size Guide Page.

Sister sizes have the same cup volume with different band sizes.
If your band feels tight but the cups fit perfectly, try going up a band and down a cup (ex: 34C → 36B).
If your band feels loose, try going down a band and up a cup (ex: 34C → 32D).

Enhanced Sizing is denoted by styles labeled with a size followed by DD+ or DDD+ (for example: M DD+ or L DDD+).
These styles are designed with more room and coverage in the cup, while the rest of the fit stays true to the base size.
Enhanced Sizing does not mean extra padding or push-up, it simply offers a better-fitting cup area for people with a larger cup size than is traditionally associated with that letter size (e.g. XXS or XS).
Detailed size guides are available on our Size Guide Page.

Bra sizing is available in 44 sizes ranging from 30B to 42DDD.
Select styles are available in XS to 3XL or enhanced sizing.
Availability varies by style. Detailed size guides are available on our Size Guide Page.

If your size is not currently available, please contact us or check back for future availability.

Tighten the straps first.
If slipping continues, a smaller band or a cup shape with closer-set straps may improve fit.

The band should feel secure but not restrictive.
If it feels uncomfortable, try a larger band or a sister size.

This typically indicates excess volume. Try a smaller cup size.

This indicates insufficient volume.
Try a larger cup size.

Try a larger cup size.

This usually means the band is too large.
Try a smaller band size.

Coverage levels indicate how revealing a style is, based on product construction and overall coverage.
Next to Nothing – Most revealing with minimal to no cup coverage.
Stripped Down – Very low coverage with minimal structure.
Tease ’Em – Low to moderate coverage with partial containment.
A Little Peek – Moderate to high coverage with added structure.
Fully Dressed – Least revealing with maximum coverage and full containment.
Detailed size guides are available on our Size Guide Page.

Unlined
No padding or lining, Follows your natural shape.
Lightly Lined
Thin lining for light coverage and minimal shaping.
Lift
Padding concentrated at the bottom of the cup for subtle lift.
Push Up
Increased padding to lift and center for enhanced cleavage.
Add A Size
Maximum padding designed to increase volume by up to one cup size.

SYRN is focused on engineering fabric that is soft, stretchy, and comfortable.
This includes lace, satin, tulle, cotton modal, and 100% cotton.
Each product page lists the specific materials used.

Both options are available.

Bralettes provide light support without padding or underwire. Support level varies by style.

Our seamless styles use a knit structure to create a smooth surface against the skin.
The lightweight knit allows for airflow and breathability while stretching and adapting to the body.
Seamless styles lie flat under clothing.

We recommend gentle hand washing in cool water to maintain fit, fabric, and longevity.
Some styles may be dry-clean only. Care instructions are listed on each product tag.

If necessary, use a mesh bag and cold delicate cycle.
Air dry only.

Store molded cups flat.
Avoid twisting or compressing cups.

Shipping is available to all 50 U.S. states, U.S. territories, and military (APO/FPO/DPO) addresses.

Please allow 1–3 business days for order processing prior to shipment.
Standard delivery takes 3–7 business days depending on location.

Shipping costs are calculated based on your destination and order.
Free standard shipping on orders over $150.
Expedited Shipping options are offered during checkout.

Our packaging is branded but never reveals what is inside.

From time to time, we'll offer pre-orders on select new styles before they're officially available.
Placing a pre-order reserves your item ahead of its release, so you don't miss out when it launches.

Each pre-order product page includes an estimated ship-by date.
Estimated ship dates are not guaranteed and may change due to production, supplier availability, or other unforeseen circumstances.
We'll send you a shipping confirmation with tracking information once your item ships.

Payment is collected in full at the time of checkout, regardless of the payment method used.
This reserves your item and secures your place in line for the upcoming release.

Yes! You can purchase both pre-order and in-stock items in the same order.

To get your in-stock items to you sooner, in-stock items may ship separately from your pre-order items.
You'll receive tracking information by email for each shipment.

If you'd like to request a change before shipment, please contact our Customer Experience team.
While we'll do our best to help, order modifications cannot be guaranteed.

Occasionally, production or shipping timelines may change.
If that happens, we'll keep you updated by email with the latest estimated ship date. Discounts, refunds, or credits are not automatically provided due to delays.

If your pre-order items have different estimated arrival dates, they may ship separately as each product becomes available. We aim to consolidate shipments whenever possible, but items will be shipped as they become available.

You can return eligible items within 30 days of receiving your order.
Need a different size? We offer size exchanges for the same item through our returns portal. Exchanges for different colors or products are not available at this time.
Returns are on us when you keep at least one item, start an exchange or opt for store credit. A $6 restocking fee applies to all other returns.
For hygiene reasons, bodysuits must have the original hygiene liner attached, and panties must be returned unopened in their original packaging.
All other items must be returned unwashed, unworn, in original condition, and with all included accessories (such as extra straps).
Purchased through TikTok Shop? You can still use our Return Portal. Just enter the SYRN order number from your order confirmation or shipping confirmation email to get started.

Exchanges are available for the same item in a different size only. We do not offer exchanges for different colors or products.
Panties are excluded from exchanges.

Once we receive and inspect your return, your refund will be processed.
Please allow up to 10 business days.

If you received an incorrect item, please submit a request through our Return Portal and select "Wrong Item Received."
Once your request is reviewed, we'll help arrange your selected return method.

If your item arrived damaged, please submit a request through our Return Portal and select "Damaged Item."
You will need to upload clear photos of the damage so our team can review as quickly as possible..

Visit our Return Portal and:
Enter your order information
Select the item(s) with the issue
Choose the appropriate reason (Wrong Item Received or Damaged Item)
Upload photos if requested
Submit your request for review.
Alternatively you can e-mail our customer care team, provide the order number and detail of the issue.

Yes. Photos are required for damaged items and may be requested for incorrect items.
Clear images help us process your claim faster.

Yes. If your order is eligible for a return, you can submit your request through the SYRN Return Portal, just like orders placed on our website.
You'll need your SYRN order number to get started, which can be found in the order confirmation or shipping confirmation emails sent by SYRN.

Your SYRN order number is included in the emails we sent after your purchase, including your order confirmation and shipping confirmation.
Enter that order number in our Return Portal to begin your return request.

At this time, exchanges are not available for TikTok Shop orders.
If you're eligible for a return, you can submit your request through the SYRN Return Portal.
Once your return is complete, you're welcome to place a new order for the item you'd like instead.

We're sorry to hear that.
Please submit a request through our Return Portal and select the reason that best matches your issue.
If photos are needed, we'll let you know during the request so our team can review everything as quickly as possible.

You can reach our customer care team by sending an e-mail to shopsyrn@gmail.com

We typically respond within 12 to 24 hours.
Response times may vary depending on inquiry volume.

The 3 for $39 panty bundle is a collection of select colors across all of our Playful panty styles.
You can mix and match colors and styles in sets of 3 pieces across the collection to be eligible for the bundle pricing.

The 3 for $39 panty bundle includes thongs, cheeky hipsters, and boyshorts.

Yes — only certain colors and styles are eligible for the bundle.
You can reference the products available on the collection page to see which colors and styles qualify.
Eligible products will also feature a 3 for $39 badge..

No — the bundle is not final sale as long as the panties are unopened.
Opened panties are ineligible for return.