These are authentic GUESS Men's Navigator Aviator Sunglasses (Model GF5114 02C). Featuring a matte black metal frame accented with red racing stripes along the top brow bar and temples, dark grey gradient lenses, and adjustable nose pads, these sunglasses deliver a sporty, high-style look. 

Condition & Details
Condition: Pre-owned / Good Working Condition. 
Frames & Hinges: Metal frame and temples are straight and sturdy with tight barrel hinges. Red stripe accents and GUESS branding are sharp and intact. 
Lenses & Nose Pads: Gradient lenses have light hairline scuffs from normal wear that do not impair vision. Clear silicone nose pads show typical minor wear. 
Markings: Inner temple arms cleanly display model ⁠GF5114 02C 61-13-140 *2⁠ and official ⁠GUESS CE UK CA⁠ stamps. 

Key Features & Technical Specifications
Modern Navigator Silhouette: Double-bridge square aviator shape provides full coverage and timeless style. 
Sporty Red Racing Stripe Detail: Bold red inlay line runs along the top bar and temple arms. 
Comfort Fit: Includes adjustable nose pads and plastic temple tips for secure, comfortable daily wear.