“Pink Thoughts” for Mother's Day: Limited Color Sunglasses Produced by the Iwai Sisters
Yamamoto Kogaku will release two limited-edition golf sunglasses "CONTRAIM," produced by professional golfers Aimi and Chisato Iwai, with a "Mother's Day" theme, starting May 8th. The product embodies the Iwai Sisters' wish to protect mothers' eyes from UV rays and promote their health.
📋 Article Processing Timeline
- 📰 Published: May 6, 2026 at 20:00
- 🔍 Collected: May 6, 2026 at 11:31
- 🤖 AI Analyzed: May 6, 2026 at 12:07 (35 min after Collected)
Yamamoto Kogaku Co., Ltd. (Headquarters: 3-25-8 Chodo, Higashiosaka-shi, Osaka; Representative Director and President: Naoyuki Yamamoto), a manufacturer and seller of industrial safety protective equipment, various sports eyewear, eyeglasses, and optical instruments, will sequentially launch two special color golf sunglasses "CONTRAIM," produced by professional golfers Aimi Iwai and Chisato Iwai (hereinafter, the Iwai Sisters), themed "Mother's Day," starting May 8th (Friday) in limited quantities at SWANS directly managed stores.
Aimi Iwai (left) and Chisato Iwai (right) wearing the "Mother's Day" special colors.
CONTRAIM: Clear Pink Color, CONTRAIM: Matte Pink Color.
This product was planned and developed by our company in response to the desire of the Iwai Sisters, who participate in the Women's Golf American Tour, to "express gratitude to their mother through sunglasses on Mother's Day, protect her eyes from UV rays, and convey a message wishing for her health."
The base model adopted is the golf-specific sunglasses "CONTRAIM," which both pros are scheduled to use in the 2026 season. The design without vertical curvature suppresses distortion of vision, and the large molded flat lens covers the entire field of vision. This plays a crucial role in protecting the eyes from UV rays in overseas tour environments, where sunlight is stronger than in Japan.
This model, which embodies the Iwai Sisters' feelings for Mother's Day, comes in two special colors: "Clear Pink," characterized by a lustrous transparency, and "Matte Pink," characterized by a pop presence. Both colors are scheduled to be worn by the Iwai Sisters and other SWANS contract professional golfers at various tournaments held from mid-April to late June.
General sales will be conducted in limited quantities at two SWANS directly managed stores (SWANS STORE Tokyo Store, SWANS STORE KITTE Osaka Store). The release date for both colors is May 8th (Friday).
Yamamoto Kogaku will continue to focus on manufacturing products that support competitors' vision and aspirations, with "Comfortable Safety" as its business concept.
■ Product Specifications and Price
Release Date: May 8th (Friday) for both colors.
SSL-CR-3101 CPN
SSL-CR-3101 CPN
Frame: Clear Pink
Lens: Silver mirror x Smoke (multi-coating on reverse)
Tax-included price: 33,000 yen
SSL-CR-3101 MTP
SSL-CR-3101 MTP
Frame: Matte Pink
Lens: Silver mirror x Smoke (multi-coating on reverse)
Tax-included price: 33,000 yen
Product Name
CONTRAIM
Lens color
Silver mirror x Smoke (multi-coating on reverse)
Visible light transmittance
16%
UV transmittance
0.1% or less (UV cut rate 99.9% or more)
Lens material
Polycarbonate
Frame material
Nylon, titanium
Weight/Curve number
30g / 5 curve
Size
Height 65mm / Width 153mm
■ What is "CONTRAIM" golf sunglasses?
Website URL: https://swans.co.jp/feature/detail/170/
"Large molded flat lens" achieving a wide, distortion-free field of vision.
Since there is no vertical curve, almost the entire field of vision can be covered by the lens, realizing an unprecedentedly wide and optically superior field of vision.
Large molded flat lens
Specially designed "titanium nose piece" that does not obstruct vision during address.
The newly designed and developed nose piece exclusively for CONTRAIM minimizes the lens mounting part as much as possible, with thorough attention to not obstructing vision.
By adopting a thin yet strong titanium material, it achieves both a wide field of vision and high durability and safety. The nose piece does not obstruct vision during actions such as "looking at the target direction" or "checking the ball and stance" during address.
Titanium nose piece
"Frame angle adjustment function" to enhance fit.
Equipped with a ratchet mechanism that allows free adjustment of the temple angle. It prevents uncomfortable conditions such as a gap between the upper frame and the face or interference between the cheeks and the lens, achieving an optimal fit for the wearer's face.
In addition, since the lens adheres to the face at an appropriate angle, it can effectively suppress the intrusion of UV rays and light.
Frame angle adjustment function
■ Directly managed store information
Website URL: https://swans.co.jp/store/
SWANS STORE Tokyo Store
SWANS STORE Tokyo Store
〒 101-0052
2-4-6 Kandaogawacho, Chiyoda-ku, OUTDOOR PLAZA 1F
■ Business Hours
Weekdays and Saturdays: 11:00 to 19:00
Aimi Iwai (left) and Chisato Iwai (right) wearing the "Mother's Day" special colors.
CONTRAIM: Clear Pink Color, CONTRAIM: Matte Pink Color.
This product was planned and developed by our company in response to the desire of the Iwai Sisters, who participate in the Women's Golf American Tour, to "express gratitude to their mother through sunglasses on Mother's Day, protect her eyes from UV rays, and convey a message wishing for her health."
The base model adopted is the golf-specific sunglasses "CONTRAIM," which both pros are scheduled to use in the 2026 season. The design without vertical curvature suppresses distortion of vision, and the large molded flat lens covers the entire field of vision. This plays a crucial role in protecting the eyes from UV rays in overseas tour environments, where sunlight is stronger than in Japan.
This model, which embodies the Iwai Sisters' feelings for Mother's Day, comes in two special colors: "Clear Pink," characterized by a lustrous transparency, and "Matte Pink," characterized by a pop presence. Both colors are scheduled to be worn by the Iwai Sisters and other SWANS contract professional golfers at various tournaments held from mid-April to late June.
General sales will be conducted in limited quantities at two SWANS directly managed stores (SWANS STORE Tokyo Store, SWANS STORE KITTE Osaka Store). The release date for both colors is May 8th (Friday).
Yamamoto Kogaku will continue to focus on manufacturing products that support competitors' vision and aspirations, with "Comfortable Safety" as its business concept.
■ Product Specifications and Price
Release Date: May 8th (Friday) for both colors.
SSL-CR-3101 CPN
SSL-CR-3101 CPN
Frame: Clear Pink
Lens: Silver mirror x Smoke (multi-coating on reverse)
Tax-included price: 33,000 yen
SSL-CR-3101 MTP
SSL-CR-3101 MTP
Frame: Matte Pink
Lens: Silver mirror x Smoke (multi-coating on reverse)
Tax-included price: 33,000 yen
Product Name
CONTRAIM
Lens color
Silver mirror x Smoke (multi-coating on reverse)
Visible light transmittance
16%
UV transmittance
0.1% or less (UV cut rate 99.9% or more)
Lens material
Polycarbonate
Frame material
Nylon, titanium
Weight/Curve number
30g / 5 curve
Size
Height 65mm / Width 153mm
■ What is "CONTRAIM" golf sunglasses?
Website URL: https://swans.co.jp/feature/detail/170/
"Large molded flat lens" achieving a wide, distortion-free field of vision.
Since there is no vertical curve, almost the entire field of vision can be covered by the lens, realizing an unprecedentedly wide and optically superior field of vision.
Large molded flat lens
Specially designed "titanium nose piece" that does not obstruct vision during address.
The newly designed and developed nose piece exclusively for CONTRAIM minimizes the lens mounting part as much as possible, with thorough attention to not obstructing vision.
By adopting a thin yet strong titanium material, it achieves both a wide field of vision and high durability and safety. The nose piece does not obstruct vision during actions such as "looking at the target direction" or "checking the ball and stance" during address.
Titanium nose piece
"Frame angle adjustment function" to enhance fit.
Equipped with a ratchet mechanism that allows free adjustment of the temple angle. It prevents uncomfortable conditions such as a gap between the upper frame and the face or interference between the cheeks and the lens, achieving an optimal fit for the wearer's face.
In addition, since the lens adheres to the face at an appropriate angle, it can effectively suppress the intrusion of UV rays and light.
Frame angle adjustment function
■ Directly managed store information
Website URL: https://swans.co.jp/store/
SWANS STORE Tokyo Store
SWANS STORE Tokyo Store
〒 101-0052
2-4-6 Kandaogawacho, Chiyoda-ku, OUTDOOR PLAZA 1F
■ Business Hours
Weekdays and Saturdays: 11:00 to 19:00