Ask for a freya active sports bra and you will be shown four different bras wearing one label, and they do not agree with each other about size. The Core family, the label’s original frames, runs UK bands 28 to 38 and cups D to H. Sonic, the moulded spacer range, runs bands 28 to 40 and cups B to H. Dynamic, the wirefree range, runs bands 28 to 40 and cups C to J. And High Octane, the newest line, is the only one that reaches a K cup. Same label, same UK size chart, four jobs and four ceilings. This guide reads each range through its own grid, so you shop the range that contains your size.
Freya Active is the sports label of Freya, the fuller bust name in the Wacoal Europe stable, the same house as Elomi. Trade title Drapers reported the launch in 2008, aimed at younger women with larger cup sizes and opening with two non compression styles: an underwired frame and a soft cup. That founding choice still organises the label: every range separates and supports, and the ranges differ in how they do it and how far up the cup alphabet they climb. Our Panache bras guide does the same for the other great British full bust house.
Choosing a Freya Active Sports Bra, Range by Range
Core, Force and Epic: the original frames
The founding frame is Core AA4002, an underwired, panelled sports bra that retailer Sports Bras Direct describes as high impact with a hook and eye back closure. Its sibling Force AA4000 is the soft cup version, full coverage without a wire. Drapers’ launch coverage puts both at cups D to H in back sizes 28 to 38: the bigger ceilings arrived later, range by range. Core is carded in our best sports bras for tennis guide, and it stays carded there only.
The third member is Epic AA4004, an underwire crop top over a moulded inner cup, with convertible straps and a deep four hook band. Press coverage carried by The Free Library lists it from 28D to 40G: wider bands than Core, a lower cup ceiling, and the fashion facing grid to prove it.
Sonic: the spacer moulded range
Sonic AA4892 is the moulded answer. Its cup is spacer foam, a breathable knit that holds a smooth, rounded shape without padded bulk, over an underwire. US retailer Macy’s carries the brand’s description: a best selling style whose spacer cup is ultra breathable and lightweight. The published grid runs UK bands 28 to 40, with D to G across every band, GG to a 38 band and H in bands 30 to 36; B and C cups sit in bands 32 to 40. Sonic suits the reader who wants a smooth outline and breathes hard enough to care what the cup is made of. Its ceiling is the honest limit: H, and only in the middle bands.
Dynamic: the wirefree range
Dynamic AC4014 removes the wire entirely: a non wired soft cup built on full encapsulation, a wide, flat underband, seam soft thread, and built up padded straps that slide into a racerback with a J-hook. Retailer Brastogo lists the fabric as 70% polyamide, 24% polyester and 6% elastane. The published grid is the surprise of the label: bands 28 to 40, with D to H cups across the full band run, HH and J in bands 28 to 38, and a C cup in bands 32 to 38. That reverses the usual pattern: the wirefree range out reaches the wired spacer range by two cup letters. For a HH or J cup who hates wires, Dynamic is not the compromise option; it is the ceiling option. It is carded in our perfect Christmas sports bra guide, and covered in prose here.
High Octane: the K cup line
High Octane AC401003 is the newest line and the label’s reach play: an underwired high impact frame whose retailer grids carry it to a K cup in its core bands, further than anything else in the label. The Amazon listing’s spec block gives the fabric as 61% polyester, 23% polyamide and 16% elastane, with a hook and eye closure. One warning belongs in print: the size chart pasted onto that listing is Freya’s generic conversion chart, running to a 44 band and every cup letter, and it is not this bra’s grid. The true grid is narrower and band dependent, widest in the middle bands. Buy it by the retailer’s size list for the style, never by the chart on the listing.
The Ranges at a Glance
| Range and frame | Job | Size reach (UK, from brand and retail sources) |
|---|---|---|
| Core AA4002 and Force AA4000 | The original frames: underwired panelled support, plus a soft cup sibling | Bands 28 to 38, cups D to H |
| Epic AA4004 | Underwire crop top over a moulded inner cup | Bands 28 to 40, cups D to G |
| Sonic AA4892 | Moulded spacer cup, breathable shape for high impact | Bands 28 to 40, cups B to H (H in bands 30 to 36) |
| Dynamic AC4014 | Wirefree soft cup encapsulation | Bands 28 to 40, cups C to J (HH and J in bands 28 to 38) |
| High Octane AC401003 | Newest underwired high impact line, widest cups in the label | Cups to K, band dependent |
UK Sizing: One Chart, Two Traps
Every Freya Active range is UK sized, and the brand’s advice page at Freya says to shop by your UK underband and cup. The band number is the easy half: a UK 38 is a US 38. The cup letters are the trap. Above a DD, UK letters pull ahead of US letters, widening as cups grow: in the brand’s conversion table, a UK K is a US O, so ordering your US letter against a UK grid lands you two or three cup volumes short. The second trap is assuming the label ceiling is the range ceiling: a K cup exists only inside High Octane’s grid, and an H cup in Sonic only in bands 30 to 36. Check the range grid first, then convert your letter. The brand also gives the sister size move, down a back size and up a cup size, and suggests a refit every six months.
Disclosure: Stellaleah is reader supported. When you buy through links in this article, we may earn a commission from Amazon at no extra cost to you. Our picks are research based: we verify manufacturer specs and published listings, and we never claim hands on testing we have not done. Read our affiliate disclosure.
Three Fresh Freya Styles, From the Everyday Label
One honest note before the cards. Every Freya Active hero above is already carded somewhere else on this site, and our no repeat rule means they are not carded twice. So the three cards here are fresh styles from Freya’s everyday label, verified on Amazon US for this guide: the plunge frame, its lace successor, and the smooth moulded balcony.
The Plunge Pick: Freya Fancies Plunge Bra (AA1011)
Fancies is the frame other Freya plunges are built on. Retailer BraForMe carries the brand copy: a low plunge built from diagonal and vertical cup seams that push the bust forward rather than up, a gated back that anchors the band while leaving it light and open, a keyhole detail at the centre front, and fully adjustable straps. US retailer Bare Necessities adds the fitter’s detail: side boning in mesh lined wings. The Amazon listing gives the fabric as 74% polyamide, 21% elastane and 5% polyester, hook and eye closure, hand wash only. The plunge grid runs UK bands 28 to 38, cups D to G. GG to K readers are not being upsold: those cups belong to the Fancies Balcony AA1012, a separate frame with a regular back.
Pros
- Three part seamed cup gives forward projection a moulded plunge cannot match
- Gated back and keyhole gore: the lightest looking construction in this guide
- Fully adjustable straps, per the brand copy
Cons
- Plunge grid stops at a G cup; GG to K sits in a different Fancies frame
- Seams and lace can texture through thin tops
- Hand wash only
| Key Specs | Freya Fancies Plunge AA1011 |
|---|---|
| Support | Underwired plunge, everyday support with forward shaping |
| Size range | UK bands 28 to 38, cups D to G |
| Closure | Hook and eye, back closure |
| Construction | Three part cup, diagonal and vertical seams, gated back, keyhole centre front; 74% polyamide, 21% elastane, 5% polyester |
| Adjustability | Fully adjustable straps |
The Lace Pick: Freya Offbeat Plunge Bra (AA5452)
Offbeat is the Fancies idea reworked in stretch lace, and the brand says so itself. The manufacturer copy on the Amazon listing states that the plunge is based on the Fancies AA1011 frame, with the same gated back, a cut out centre front, stretch floral lace throughout, and contrast detailing on fully adjustable straps. The brand’s Offbeat page at Freya notes the collection’s side support frame reaches a K cup; the plunge’s own grid is UK bands 28 to 38, cups C to GG, wider at the top than Fancies. The listing gives the fabric as 73% nylon, 18% elastane and 9% polyester and fields the style at medium support. Buy by style number, not by title: Amazon titles the listing as a side support bra while its own spec block gives AA5452, the plunge.
Pros
- The proven Fancies plunge frame, reworked in stretch floral lace
- Wider cup reach than Fancies: to GG in the brand grid
- Gated back with contrast, fully adjustable straps
Cons
- Amazon’s listing title says side support; check style number AA5452 before ordering
- Sheer stretch lace will show texture under fine knits
- Hand wash only
| Key Specs | Freya Offbeat Plunge AA5452 |
|---|---|
| Support | Underwired plunge; the Amazon listing fields the style at medium support |
| Size range | UK bands 28 to 38, cups C to GG |
| Closure | Hook and eye, back closure |
| Construction | Stretch floral lace on the Fancies AA1011 frame, gated back, cut out centre front; 73% nylon, 18% elastane, 9% polyester |
| Adjustability | Fully adjustable straps with contrast detailing |
The Smooth Pick: Freya Idol Underwire Molded T-Shirt Bra (AA1050)
Idol is the everyday label’s smooth answer: a moulded balcony cup that disappears under a T-shirt while keeping the balcony’s low, lifting cut. The Amazon listing’s spec block gives the construction plainly: balconette coverage, light padding, a hook and eye back closure, fabric of 81% polyester, 16% nylon and 3% elastane, and a medium support field. Amazon US variants verified here span 28DD to 36DD and up to 34GG, so the printed grid is the evidenced span, UK bands 28 to 36, cups C to GG, not a guess at the full factory grid. A moulded cup is a fixed shape: on a very soft bust it can gap at the top edge where a seamed cup, like the two picks above, would follow the breast instead.
Pros
- Smooth moulded cup disappears under T-shirts; the only seamless profile here
- Balcony cut lifts without a high gore
- Long running style with a wide Amazon US variant span
Cons
- Narrowest evidenced band span of the three picks: 28 to 36
- Fixed moulded shape can gap on a softer bust
- Hand wash only
| Key Specs | Freya Idol AA1050 |
|---|---|
| Support | Underwired moulded balcony; the Amazon listing fields the style at medium support |
| Size range | UK bands 28 to 36, cups C to GG (Amazon US variants verified) |
| Closure | Hook and eye, back closure |
| Construction | Moulded smooth cup, balcony coverage, light padding; 81% polyester, 16% nylon, 3% elastane |
| Adjustability | Adjustable straps |
Common Questions About Freya Active
Is every Freya Active sports bra UK sized?
Yes, all four ranges. The band number matches your US band, but above a DD the cup letters diverge, reaching UK K equals US O in the brand’s conversion table. Convert your cup letter before ordering.
Which Freya Active range goes largest?
High Octane, to a K cup in its core bands, then Dynamic to a J cup in bands 28 to 38. Every other range stops at H or below.
What is the difference between Sonic and Dynamic?
Construction and ceiling. Sonic is underwired with a moulded spacer cup, topping out at an H cup in bands 30 to 36. Dynamic is wirefree soft cup encapsulation with a J-hook racerback option, reaching a J cup. The wirefree bra is the bigger cup bra here, the opposite of most labels.
Why are the cards in this guide everyday bras?
Because every Freya Active hero is already carded elsewhere on this site, and this site does not card the same style twice. The Active ranges are covered in prose here, with their full grids.
The Bottom Line
Read Freya Active by range and the label stops being confusing. Core is the original D to H frame, Epic its wider banded crop top, Sonic the breathable spacer that stops at H, Dynamic the wirefree range that quietly reaches J, and High Octane the one line that earns the K cup headline. Pick the range whose grid contains your UK size, convert your cup letter before you order, and ignore any size chart that promises every letter in every band.
