{ "@context":"http://schema.org/", "@id": "https://www.laccico.com/en/shape-diameter/flat-laces-by-width/flat-laces-6-mm#faq", "@type":"FAQPage", "mainEntity": [{"@type":"Question","name":"When should you choose 6 mm flat laces (F6-CS \/ F6-XR)?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Choose 6 mm flat laces for classic retro sneakers, sturdy skate shoes, as well as bold boots and workwear boots with wide metal eyelets or punched eyelet slits of 4.5 mm or larger.While 3 mm and 4 mm flat laces are designed for refined dress shoes and sleek leather sneakers, the 6 mm flat profile adds a bold, authentic touch to heavier uppers and ensures a wide, pressure-free fit across the entire instep.  Profile & Width Comparison    Swipe sideways Lace WidthModel SeriesVisual AppearanceTypical FootwearEyelet Type & Size6 mm FlatStandard & Extra StrongF6-CS (6 mm)F6-XR (6 mm)Distinctive, prominent, and shape-retaining; completely fills larger eyelet openings.Retro sneakers, court silhouettes, skate shoes, workwear boots.Metal eyelets & slits (from 4.5 mm)4 mm FlatSmart CasualF4-CS (4 mm)Slim and balanced; effortlessly combines sportiness with elegance.Minimalist sneakers, classic Derbies, Chukkas, Longwings\/Brogues.Punched eyelets (3.5 \u2013 4.5 mm)3 mm FlatClassic EleganceF3-CS (3 mm)Delicate and puristic; lies completely flat against the shoe vamp.Oxfords, Cap-Toes, Wholecuts, welted business shoes.Blind eyelets (2.0 \u2013 3.0 mm)"}},{"@type":"Question","name":"What is the difference between the F6-CS series and the extra tear-resistant F6-XR series?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The difference lies in the braiding geometry and yarn thickness: The F6-CS series features a classic single-wax finish for everyday use, while the F6-XR (Extra Robust) series is braided with reinforced cotton plied yarns for maximum tensile strength and heavy-duty wear.The F6-XR series is particularly suited for sharp-edged metal eyelets, heavy lace-up boots, workwear, and heritage boots, as its densified braided structure reliably withstands friction against rivet edges and speed hooks.  Series Comparison F6-CS vs. F6-XR    Swipe sideways FeatureLACCICO F6-CS (Classic Sportive)LACCICO F6-XR (Extra Robust)Braiding StructureEven rotary braid crafted from 100% long-staple cotton.High-density special braid engineered with an increased strand count.Tensile & Abrasion StrengthHigh; fully suited for everyday wear in sneakers and casual low shoes.Extremely high; withstands sharp metal eyelets and speed hooks.Tactile Feel & Edge DefinitionFlexible, supple, and shape-retaining when tied.Distinctly solid, friction-resistant, and exceptionally tear-proof.Available Lengths75 \u2013 150 cm75 \u2013 150 cmIntended UseRetro sneakers, court shoes, casual shoes.Workwear boots, heritage boots, skate shoes, heavy boots."}},{"@type":"Question","name":"Which shoe types pair best with 6 mm flat laces?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"6 mm flat laces pair best with classic heritage boots (e.g. Red Wing, Wolverine), retro and court sneakers, as well as sporty lace-up boots featuring prominent eyelet facings.Thanks to their wide profile, 6 mm laces fill punched eyelets or slits completely, create a striking contrast against sturdy upper leather or canvas, and protect the instep against pressure points when laced tightly.  Shoe Models & Compatibility    Swipe sideways Shoe Type & ModelEyelet Type & SizeRecommended SeriesRecommended LengthsVisual AppearanceRetro & Court Sneakers(e.g. Stan Smith, Superstar, Blazer)Punched holes \/ Metal eyelets(approx. 4.5 \u2013 5.0 mm)F6-CS (6 mm)90 \u2013 120 cmAuthentic vintage look; dirt-resistant thanks to a firm wax finish.Heritage & Workwear Boots(e.g. Moc Toe, Iron Ranger)Nickel-plated eyelets & hooks(from 4.5 mm)F6-XR (6 mm)120 \u2013 150 cmRugged appearance; withstands sharp edges of speed hooks.Skate Shoes & Canvas Sneakers(e.g. Vans, Chucks, DC)Large metal eyelets(approx. 5.0 mm)F6-CS (6 mm)F6-XR (6 mm)120 \u2013 150 cmSecure fit without sagging; wide profile protects against friction.Low Casual Shoes & Short Lacing(3 to 4 pairs of eyelets)Metal eyelets(from 4.5 mm)F6-CS (6 mm)75 cmCompact bow without excess lace length."}},{"@type":"Question","name":"Why do waxed 6 mm flat laces not curl up when tightened?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Curling or twisting in flat laces does not depend on the material itself, but is a matter of proper technique during threading and correctly matching the lace width to the eyelet size.To prevent twisting right from the start, guide the lace through the eyelet with one hand while letting the trailing section slide over a finger of the other hand under light counter-tension. Through this two-handed pull, the eyelet opening acts like a guide track that sets the 6 mm lace into an exact, flat alignment. Once a lace is tightened with an unnoticed twist, correcting that rotation afterward becomes considerably difficult.  Handling & Threading Guide    Swipe sideways Lacing PhaseCorrect Technique (Two-Handed Guidance)Eyelet FunctionCommon Mistake1. Insertion & AlignmentPosition the aglet flat and parallel to the eyelet opening and insert it without prior twisting.Eyelet edge accepts the lace flush and completely flat.Pushing the lace into the hole at an angle or already twisted.2. Pull-Through with Counter-TensionOne hand pulls the end through while the lace glides under tension over the fingertip of the second hand.Eyelet acts as a guide track, enforcing the flat alignment of the 6 mm band.One-handed, jerky pulling without loop control.3. Final Tightening & TyingSmooth the horizontal bars flat on both sides before tying the knot and lay the loops flat against each other.Maintains uniform tension across the entire instep.Forcefully retightening a twisted lace, distorting the knot."}},{"@type":"Question","name":"Which shoelace length is required for 6 mm flat laces on sneakers and boots?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For low shoes and sneakers with 4 to 5 pairs of eyelets, a length of 75 cm is the standard, whereas 5 to 6 pairs require 90 cm and 6 to 7 pairs require 120 cm.For high-top sneakers as well as 7- to 8-eyelet heritage and workwear boots, 150 cm is the proper choice to guide the 6 mm flat profile reliably through the entire facing and tie a neat, shape-retaining bow.  Length & Eyelet Matrix 6 mm    Swipe sideways Eyelet PairsRecommended F6 LengthStraight Bar LacingCriss-Cross LacingTypical Footwear3 \u2013 4 eyelets75 cm75 cm75 cmLow casual shoes, short skate lacing.4 \u2013 5 eyelets75 cm75 cm75 cmLow-top sneakers, classic casual shoes.5 \u2013 6 eyelets90 cm90 cm90 cmRetro court sneakers, athletic and casual shoes.6 \u2013 7 eyelets120 cm120 cm120 cmMid-tops, classic 6-inch heritage boots.7 \u2013 8 eyelets150 cm150 cm150 cmHigh-top sneakers, 8-eyelet workwear boots, and lace-up boots."}}] }