TTDNA renders its own neutral topsheet visualisation for this brand, generated from verified construction data.
Friendship 729 · Other · Inverted
Sky-Wing
A slightly tacky covering with a soft sponge and a notably high arc. It is built for looping and gives strong control at moderate speed.
Official specifications
Friendship covering families and commercial editions are kept separate so sponge, hardness and regional versions do not create duplicate products.
- Official covering name
- Sky-Wing
- Series
- Other
- Category
- Inverted
- ITTF approval code
- No numeric code listed
- ITTF approval status
- Approval status unknown
- Published hardness
- 38°
- Hardness scale
- Chinese sponge degree (no named laboratory standard)
- Published thicknesses
- 2.0 mm · 2.1 mm · MAX
- Verified colours
- Red · Black
- Ball type
- Standard
- Sponge description
- Standard sponge
- Topsheet description
- Standard inverted topsheet
- Country of manufacture
- China
- Availability
- Legacy, still sold
- Stock
- Stock unknown
- Last verified
- 1 August 2026
Friendship publishes sponge hardness on Chinese degree scales without a named laboratory standard. TTDNA stores each value exactly as published and never converts it to Shore A, Shore C or an ESN equivalent.
Colours are only listed when an ITTF covering entry verifies them. Red and black are never assumed.
TTDNA ratings
TTDNA values are analytical 0-100 scores derived from construction, category and verified specifications. They are never official Friendship ratings and are never shown as manufacturer values.
Physical characteristics
Playing characteristics
Variants and configurations
6 variantsColour, 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.
Red · 2.0 mm
Standard · Sponged · 38°
Speed 70 · Spin 85 · Control 98
Red · 2.1 mm
Standard · Sponged · 38°
Speed 73 · Spin 87 · Control 96
Red · MAX
Standard · Sponged · 38°
Speed 76 · Spin 88 · Control 93
Black · 2.0 mm
Standard · Sponged · 38°
Speed 70 · Spin 85 · Control 98
Black · 2.1 mm
Standard · Sponged · 38°
Speed 73 · Spin 87 · Control 96
Black · MAX
Standard · Sponged · 38°
Speed 76 · Spin 88 · Control 93
Surface classification
Slightly tacky
Surface classification (grippy, slightly tacky, tacky, very tacky, pips, anti) is a TTDNA editorial classification, not an official Friendship metric.
Price
- List price
- Varies by retailer
No verified official Friendship price snapshot is stored in this import, so prices are shown as varying by retailer and are never converted between currencies.
Suitability
- Skill levels
- Intermediate · Advanced
- Play styles
- Topspin offense · Controlled offense · Mid distance
- Aliases
- Sky Wing · 729 Sky-Wing · Friendship Sky-Wing
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Known users
Offensive club and league players who want a spin-first inverted sheet on the forehand or backhand.
Friendship 729 publishes no athlete roster for this sheet, so TTDNA shows the player profile it is built for instead of invented names.