[Kojima Genes] 21oz Heavyweight Straight Jeans Made in Japan One-Wash Denim RNB-1221R Size 40

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■ Recommended Scenes Engineered for hardcore motorcycle touring as windproof and thermal leg armor, heavy-duty garage mechanics, and premium DIY craftsmanship. With its legendary industrial durability, this masterpiece is the ultimate everyday companion for vintage Americana collectors who want to sculpt a completely custom, high-contrast fade over 5 to 10 years of continuous heavy wear.

■ Highlights Experience the pinnacle of legendary Japanese denim engineering born in the sacred cradle of apparel craftsmanship—Kojima, Kurashiki City, Okayama Prefecture. Kojima Genes introduces its ultimate flagship masterpiece: the 21oz Regular Straight Heavyweight Denim Jeans. This garment completely shatters the structural boundaries of standard fashion denim (typically 12-14oz) by deploying a massive, ultra-dense 21-ounce (21oz) premium raw cotton weave. So dense that the pants can literally stand upright on their own, this armor-like denim delivers exceptional wind defense and high-abrasion resistance, making it an essential layer for riders and outdoor operators. Cut in a timeless, uncompromising "Orthodox Regular Straight Fit," it creates a clean, authoritative silhouette that complements any footwear from rugged engineer boots to classic sneakers. This edition undergoes an expert factory "One-Wash Process" by master artisans, meaning the dramatic, unpredictable shrinkage characteristic of raw shrink-to-fit denim has already been engineered out, allowing you to confidently select your true size from day one. Though incredibly stiff during the initial break-in period, this heavy-weight fabric rewardingly yields deep-set, high-contrast whiskers, distinct honeycombs behind the knees, and a profound indigo patina that lighter jeans simply cannot manifest. Complete with a thick branded genuine leather patch and heavy-duty brass hardware, this is an authentic, indestructible piece of Made-in-Japan luxury.

■ Professional Care Advice While this garment boasts indestructible 21-ounce structural integrity, specific care is paramount to developing a highly personalized, high-contrast fade profile. Due to the rich saturation of pure organic indigo dyes, significant color bleeding will occur during initial wash cycles; always launder completely separate from white or light-colored clothing. Close the heavy-duty zipper fly and top tack button, turn the jeans entirely inside out, and place them into a dense mesh laundry bag to wash using a gentle or delicate cycle with cold water. Utilize specialized denim wash or mild neutral detergents without optical brighteners or bleaching agents to maintain the deep, midnight-indigo undertone. Tumble drying is strictly prohibited, as extreme thermal friction will warp the heavyweight cotton weave and distort the pocket alignments. Reshape the waistband and legs immediately, then line dry naturally in a well-ventilated, shaded space.

■ Brand / GTIN / Model Number ・Brand: Kojima Genes (児島ジーンズ) ・GTIN (UPC): 4580024760599 ・Model Identifier: RNB-1221R

■ Size / Weight ・Labeled Size: 40 Inches (King Size Specification. Flat Parameters: Waist 96cm, Rise 29cm, Inseam 85cm, Thigh Width 33cm, Hem Width 22cm. Microscopic variations may occur due to hand-measured processes.)

blaze ・Garment Weight: approx. 1.25 kg (Massive 21oz heavyweight construction) ・Package Size: 22.00 x 9.00 x 28.00 cm ・Package Weight (Total): 1.45 kg

■ Shipping & Policy ・To optimize international cargo security and minimize carbon footprints during long-haul transit, this premium heavy item is tightly flat-folded within a specialized, secure industrial cargo wrap. Due to the high structural memory of the 21oz high-density weave, any unboxing creases are temporary and will rapidly smooth out via natural body heat dissipation during wear or through the first gentle wash. ・Due to international freight chains and vertical stacking storage practices inside fulfillment centers, the exterior clear protective utility skin may exhibit minor surface friction patterns or superficial corner creasing. Provided the inner denim, genuine leather patch, and original tags remain pristine, these occurrences are exempt from damage claims. ・Because this garment is woven on vintage shuttle looms and finalized through an artisan one-wash cycle, subtle variations in indigo ink saturation depth or natural spinning slubs (yarn nodules) are inherent hallmarks of authentic Japanese denim rather than manufacturing defects. ・Actual fabric tones may register minor chromatic deviations under different electronic display calibrations, smartphone screen brightness layouts, and ambient daylight exposure during product photography.