**[VINTAGE ARCHIVE] NIKE 4121AF 004 with FLEXON Memory Metal Frame**

This functional archive piece from the early-to-mid 2000s features **FLEXON**, a nickel-titanium-based shape-memory alloy. Renowned for its incredible elasticity, the frame returns to its original shape even after significant impact or bending. Combining the brand reliability of NIKE with the extreme durability of FLEXON, this model is an ideal choice for active individuals or as a robust daily "combat" frame.

🔍 **Condition Report**

[NOTICE] This is an authentic vintage/pre-owned item from the 2000s, not a modern reproduction. Please review the high-resolution photos and videos carefully.

* **Maintenance:** Completely disassembled followed by professional ultrasonic cleaning and basic refurbishment.

* **Replacement:** The original nose pads have been replaced with brand-new silicone pads for a fresh and comfortable fit. The nose pad bridge area has also been thoroughly sanitized.

* **Status:** Shows natural signs of wear, including minor paint loss on parts of the frame. However, the structural integrity and characteristic elasticity of the NIKE with FLEXON line remain fully functional. Ready for immediate use.

💡 **Brand & Technical Analysis**

* **FLEXON Technology:** The shape-memory alloy provides exceptional resistance to warping, making it perfect for sports, work, or heavy daily use.

* **Design:** Features a slim rectangular shape popular in the 2000s, providing a sharp and defined silhouette.

* **Asian Fit (AF):** Specifically designed for Asian facial structures with a properly elevated nose bridge, ensuring a stable and comfortable fit.

📊 **Product Specifications**

* **Model ID:** NIKE 4121AF 004

* **Period of Manufacture:** **2000s** (The golden era of FLEXON alloys)

* **Origin:** Japan Domestic Market Archive

* **Imported from:** **JAPAN**

* **Weight:** Approx. **13g** (Ultralight functional structure)

📏 **Size Guide (Men's Slim Fit / Women's Medium-Large)**

* **Marked Size:** 51 □ 19 - 140

* **Lens Width:** 51mm / **Lens Height:** 28mm

* **Bridge:** 19mm / **Temple:** 140mm

* **Total Front Width:** 138mm

* **Gender:** Men's Slim / Women's (Unisex)

📦 **Warranty & Authenticity**

✔ Secure protective packaging for safe international transit

✔ 100% full refund if counterfeit or if materials do not match the description

✔ Recording of the entire packing and shipping process for buyer safety

👓 **Lens Information**

본 상품은 안경테 판매 상품입니다.

중고 안경 특성상 장착된 렌즈가 있는 경우, 분리 가능 시 안경테만 발송됩니다.

빈티지 안경 특성상 기존 렌즈 없이 안경점에서 새 렌즈 제작이 어려울 경우, 새 렌즈 제작을 위한 데모렌즈 용도로 기존 렌즈가 동봉될 수 있습니다.

무테, 반무테 및 일부 특수 구조의 안경은 개인이 렌즈를 탈착하기 어렵거나 무리한 분리 시 프레임 파손 위험이 있어 형태 유지 및 안전한 보관·배송을 위해 렌즈를 장착한 상태로 발송될 수 있습니다.

이 경우 렌즈는 판매 대상이 아닌 데모렌즈(부속품)이며, 시력교정 목적의 사용 및 착용은 불가합니다.

반드시 안경점에서 새 렌즈로 교체하여 사용하셔야 합니다.

구매 시 상기 고지사항에 동의한 것으로 간주합니다.

[Shipping Notice]

Standard shipping is via International Registered Small Packet (Air Mail / Tracking Available / 1–2 weeks delivery).

​However, if your country is designated as a "Shipping Restricted Country" due to unforeseen circumstances (e.g., local postal strikes, war, or extreme weather), you must choose one of the following options:

​Option 1: Sea Mail (Surface)

​Cost: No additional charge

​Duration: 1–3 months (Very Slow)

​Risk: High risk of loss & Limited tracking. Tracking stops updates for weeks while at sea.

​[IMPORTANT Disclaimer] If you choose Sea Mail, the seller is NOT responsible for any loss or damage after the package departs from Korea. No refunds will be issued for delayed or lost packages via Sea Mail. You assume full risk.

​Option 2: Air Parcel (Recommended)

​Cost: Additional fee applies

​Duration: 1–2 weeks (Fast & Safe)

​Benefit: Full tracking and insurance included. We strongly recommend this option.

​In the event of a shipping restriction, I will contact you via chat. If I do not receive a response, your order will be shipped via Option 1 (Sea Mail) by default, and you agree to the risks above.

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