Double Fish · No family · Inverted

FL233

FL233 is one canonical identity covering FL 233 and FL-233. The code prefix is not treated as evidence of construction: nothing about topsheet, sponge or speed is inferred from the product number.

Approval listed onlyGrippy to mildly tackyListed in the Double Fish approval inventoryMarket status unknownMade in China

Also listed as: FL 233 · FL-233 · Double Fish FL233

Specifications and evidence

CategoryInverted
SurfaceGrippy to mildly tacky
SpongeDouble Fish sponge
Sponge hardnessMedium (TTDNA band)
Hardness scaleNo published manufacturer scale
ThicknessStandard sheet range
Rubber coloursBlack · Red
Country of manufactureChina
Approval nameFL233
Approval ID23-005
Approval coloursNot recorded
Approval statusListed in the Double Fish approval inventory
Approval verifiedCurrent list
Market statusMarket status unknown
Market status verifiedCurrent
Market sourceNo verified current source
List priceVaries by retailer

Approval evidence and market availability are recorded separately. A name listed by an approval source is not proof that the rubber is currently on sale, and a rubber on sale is not proof of a current approval. Approval is never inherited by a suffix or edition, and no expiry date is invented.

Market status describes current commercial availability only. Where it could not be verified it stays unknown rather than being guessed from a shop listing.

Printed hardness values are manufacturer figures on the maker's own scale. A printed Chinese degree is not assumed to equal an ESN degree, and no hardness is inferred from a product code or a sponge colour.

No reliable official Double Fish list price is published per region, so no price is shown rather than an invented one.

TTDNA core profile

Speed
78
Spin
87
Control
83
Arc
55
Hardness
52
Tackiness
6
Block
71
Durability
74
Throw angleMedium
Play stylesAll-round play · Blocking
Recommended sideBackhand · Forehand
Speed classALL · ALL+
LevelIntermediate

TTDNA values are TTDNA's own editorial 0–100 ratings. They are not official Double Fish measurements, not laboratory data and not a conversion of any retailer score.

TTDNA ratings

Speed78
Spin87
Control83
Power77
Grip84
Tackiness74
Arc55
Catapult50
Throw angle59
Elastic64
Spin sensitivity85
Short game65
Blocking67
Backhand flip78
Counterloop82
Opening loop78
Chop59
Serve84
Service receive75
Difficulty61
Beginner friendly48
Durability70

TTDNA values are TTDNA's own editorial 0–100 ratings. They are not official Double Fish measurements, not laboratory data and not a conversion of any retailer score.

Data confidence

Verification tierApproval listed only
Specification confidenceMedium
Editorial confidenceMedium
Unresolved fieldscurrent commercial variants · verified thicknesses · verified sponge hardness · current approved colours · current market status
Source prioritycurrent_official_double_fish_product_page_or_catalogue → current_official_double_fish_technical_sheet → current_authorised_double_fish_distributor → latest_currently_valid_ittf_racket_covering_list → official_product_packaging → established_specialist_retailer → archived_official_or_distributor_page → independent_specialist_test → multi_source_review_consensus → community_discussion → marketplace_listing
Last checked3 August 2026

Variants and configurations

1 variant

Colour, thickness and configuration are variants of one model — never separate products. Colour never changes a rating, MAX and OX stay qualitative labels, and OX carries no sponge hardness.

Black · Red · Standard sheet range

Standard · Sponged · Medium (TTDNA band)

Speed 78 · Spin 87 · Control 83

Known users

Offensive club and league players who want a spin-first inverted sheet on the forehand or backhand.

Double Fish publishes no athlete roster for this sheet, so TTDNA shows the player profile it is built for instead of invented names.

20 Double Fish models in TTDNA · Compare the range