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Diadora Speed Blushield Fly 4+ Men’s Tennis Shoe Review (2025)
In this article, I have tested the following Diadora men’s tennis shoe models. The products have been received from Diadora in exchange for reviews, and the reviews reflect my true opinions.
This article includes affiliate links, indicated by an asterisk (*). If you purchase through these links, the author may earn a small commission — at no extra cost to you.
Diadora Speed Blushield Fly 4+
Pros & Cons
Details
Model Name: Speed Diadora Blushield Fly 4+
Price: $160.00
Court Type: Hard
Summary
The Speed Blushield Fly 4+ is a speed-oriented model that provides slightly more cushioning and support than the B.Icon. It features similar high ankle flaps but offers a more padded feel throughout, which improves overall comfort and stability.
Although the Speed Blushield Fly 4+ is designed for speed, it delivers surprisingly good comfort. The shoe feels soft all around, and no material rubs against your foot. Similar to Adidas’ Ubersonic and K-Swiss’ K-Frame and Pinnacle models, the Blushield Fly 4+ has a bootie-style construction that enhances overall comfort.
At first glance, the shoes appear bulky and heavy, but to my surprise, they felt quite agile and not heavy at all. The material quality was above average, and the comfort was excellent. I ordered a size larger, as recommended on Diadora’s website, but found that size slightly too big for me, so I would suggest staying true to your regular size.
On court, the Blushield Fly 4+ felt comfortable right from the first session. The bootie-style construction holds your feet securely in the sock-like interior. However, because of this design, I could not get the shoes as tight around my ankle as I would have liked.
You can tie the laces quite snugly, but not quite enough for my preference. For players with wider ankles, though, this might actually be an advantage, as the fit will not feel too tight.
The shoes felt comfortable to play in from the start, and I did not notice any need for additional break-in. The sole felt slightly firm, as I usually prefer when it conforms more closely to the shape of my feet. Despite this, the Blushield Fly 4+ still provides excellent playing comfort.
The only downside of the extra cushioning is that some players may find the shoes a bit too soft and not supportive enough. Similar to the On The Roger Clubhouse Pro shoes, which I also tested, the Blushield Fly 4+ offers excellent comfort but slightly less structure and firmness.
One bigger drawback in the shoe’s design is the extra-long laces. Before playing, I had to tuck them inside the shoe to prevent them from slipping under the sole during play.
In summary, the Blushield Fly 4+ is a strong choice for players looking for maximum comfort with good agility. Aggressive players who prefer a more responsive shoe with extra support may find the Blushield Torneo 3 a better fit.
Special Features
- Sock-like construction: provides a snug, adaptive fit for better foot stability.
- SuprellTech + Air Mesh + D-Skin upper: combines materials to deliver excellent stability, breathability, and comfort.
- Lycra® lining: enhances in-shoe comfort and keeps the foot securely in place.
Material Quality 9/10
Material-wise, the Diadora Blushield Fly 4+ is built with good-quality materials. The outer of the shoe is primarily made of a rubberized mesh fabric, and the rubber around the shoe feels solid and well-made.
The most noticeable feature is the sole, which is finished well with sturdy and durable rubber.
The interior of the shoe feels well-made and very soft, and no material rubs against your foot.
However, the fabric on the outer part of the shoe may raise some questions about long-term durability. The sock and laces area is crafted from mesh-type fabric, which feels somewhat harsh and could be more vulnerable to wear and tear compared to the other parts of the shoe.
For a $160 shoe, I would say the overall material quality is better than average if you exclude the outer mesh fabric..
Comfort 9/10
Cushioning: The shoe is very well cushioned all around and feels soft during play.
Stiffness: Overall, the shoe feels soft, though the sole has a slightly stiff feel.
Heel: The heel area is well cushioned and provides good dampening.
Toes: There is enough room in the toe area, and the toes are well-supported. The ball of the foot is also well cushioned, and weight is evenly distributed across the sole.
Prolonged use: The shoes remain very comfortable during play, though I initially felt a light strain on my feet due to the slightly stiffer sole.
Support And Stability 8/10
Lateral support: The shoes provide average lateral support, which is sufficient for basic play. However, more aggressive players may find the support somewhat limited.
Ankle support: The ankle area offers medium support, but for my preference, it could be slightly firmer. Even with the laces threaded all the way, it does not feel as tight as it could.
Arch support: the arch of the foot has neutral support, making it suitable for players with over- or under-pronation.
Agility 8.5/10
Changes of direction: For their size, the shoes are surprisingly agile and do not feel clumsy.
Speed: Weight-wise, the shoes fall into the medium or medium-light category, yet they feel quite responsive for their weight.
Flexibility: The shoes adapt well to the movement of your feet, although I would have preferred a slightly softer sole.
Grip 9.5/10
Sole shape: The sole of the shoe is mostly flat, with one slightly hollow section in the middle.
Grip on the court: Thanks to the well-finished sole, the shoes provide better-than-average grip during play.
Grip in prolonged use: The shoes maintain good performance over extended play, and I did not notice any loss of grip.
Breathability 9/10
Moisture: Since much of the shoe’s outer material is made of mesh, the Blushield Fly 4+ offers better-than-average moisture control. Even though it is a relatively bulky shoe, I did not notice any issues with moisture buildup.
Weight 9/10
In terms of weight, the Blushield Fly 4+ falls into the medium category at 14.5 ounces (410 grams), making it about half an ounce (10 grams) lighter than the B.Icon.
Overall, the Blushield Fly 4+ model feels fast for its weight.
The Fit 8/10
Size in general: Diadora recommends going a size up, but for me, the larger size felt slightly too big, so sticking with your regular size should work fine.
Width: The shoe is wide enough and does not squeeze the foot laterally. The midfoot area could still be slightly stiffer to reduce flex during lateral movements.
Adjustability: The fit can be adjusted with the laces, but even when threaded all the way through, they do not feel as tight as I would prefer.
Value For Money 8.5/10
Price range: The new Diadora Blushield Fly 4+ retails for $160, placing it in the premium category. Most of the materials are high-quality, although the extra-long laces and the slightly rough texture of the outer fabric could be improved.
Lifespan: While most of the shoe is made from durable materials, some components are of only average quality, giving the shoes medium to medium-plus durability. With regular use, they should last around six months or more.
