{ "@context":"http://schema.org/", "@id": "https://www.laccico.com/en/shape-diameter/flat-laces-by-width/flat-laces-4-mm#faq", "@type":"FAQPage", "mainEntity": [{"@type":"Question","name":"Which shoelace thickness is ideal for classic derby shoes and chukkas?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For classic derby shoes and chukkas with visible punched or metal eyelets measuring 3.5 mm inside diameter and above, waxed 4 mm flat shoelaces (F4-CS series) or 3 mm round shoelaces (R3-CS series) are the professional choice.Because derby and chukka styles are typically crafted with larger eyelets, the 4 mm lace profile fills the opening accurately both visually and technically. At the same time, the flat profile provides a broad contact surface that distributes tension evenly across the tongue, closing comfortably over the instep.  Derby & chukka fit    Swipe sideways Shoe Type & CutEyelet Type & SizeRecommended SeriesMatching LengthsVisual StyleClassic Derby(Open lacing)Punched & metal eyelets(3.5 \u2013 4.5 mm)F4-CS (4 mm)R3-CS (3 mm)75 \u2013 90 cmBalanced proportion to the broader eyelet facing; firm, tactile pull.Chukka Boots & Ankle Boots(2 to 3 pairs of eyelets)Metal eyelets \/ hooks(approx. 4.0 mm)F4-CS (4 mm)60 \u2013 75 cmSmart-casual look on smooth leather and suede.Budapesters & Full Brogues(Substantial welt stitching)Open punched eyelets(3.5 \u2013 4.0 mm)F4-CS (4 mm)75 \u2013 90 cmAccentuates the artisanal character and fills the perforations cleanly."}},{"@type":"Question","name":"Which flat shoelaces suit smart-casual trainers and casual footwear?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"For smart-casual trainers made of smooth or nubuck leather, waxed 4 mm flat shoelaces (F4-CS series) are the ideal choice, maintaining the precise balance between formal elegance and effortless casual style.Unlike broad 6 mm standard trainer laces, 4 mm laces create a much leaner and tidier appearance on clean minimalist and court sneakers, while the firm wax coating on the cotton fibres prevents greying and rapid soiling.  Trainer & casual guide    Swipe sideways Trainer TypeRecommended F4-CS ColourMatching LengthsVisual Style on the ShoeMinimalist Smooth Leather Trainers(e.g. white, grey, black)White, Black, Grey, Dark Blue90 \u2013 120 cmClean, understated, and suitable for pairing with tailored trousers.Retro Court Trainers(Tennis & indoor silhouettes)Cream (Panna), Beige, Dark Brown120 \u2013 130 cmRefined vintage character with a subtle semi-gloss sheen.Suede & Roughout Trainers(Velours \/ Smart Casual)Cognac, Castagna, Dark Grey90 \u2013 120 cmHarmonious textural contrast between the waxed lace and velvety leather."}},{"@type":"Question","name":"Why do waxed 4 mm flat shoelaces provide better hold on premium trainers?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Thanks to their flat 4 mm contact surface, waxed 4 mm flat shoelaces provide even pressure distribution across the instep and interlock reliably at the knot due to the grip of the supple wax coating.Compared to unwaxed polyester laces that yield under walking motion and require frequent re-tying, the 4 mm rotation-braided cotton maintains its tension throughout the day without exerting localised pressure points on the midfoot.  Hold & pressure distribution    Swipe sideways PropertyLACCICO F4-CS (4 mm Waxed)Standard Unwaxed Fabric LacesPressure distribution on the instepEven and broad-surface; prevents pressure points under tight lacing.Uneven; cuts into the foot locally when pulled taut.Knot securityExcellent; subtle wax adhesion reliably secures the bow.Moderate; slick synthetic fibres loosen step-by-step with movement.Shape retention during wearDimensionally stable; keeps its flat width without curling or rolling up.Collapses into itself, creating an uneven cord-like look.Dirt resistanceHigh; wax seals the fibres against street dust and moisture.Low; grime and street dirt penetrate deep into the unsealed fabric."}},{"@type":"Question","name":"Which shoelaces do not stretch undesirably during wear?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Densely braided shoelaces made of 100% long-staple cotton with thorough deep-waxing (F4-CS series) do not stretch undesirably during wear, as the fibre structure remains dimensionally stable under tensile load.While synthetic laces (such as elastic polyester or loosely knit cords) yield under tension and loosen the heel hold in the shoe, the LACCICO rotation braid holds the foot securely within the shaft without restricting movement.  Stretch & material analysis    Swipe sideways Material & ConstructionTensile Stretch BehaviourEveryday Heel HoldTear ResistanceLACCICO F4-CS(100% waxed cotton)Minimal and dimensionally stable; reliably retains the laced length.Consistently secure fit throughout the day without re-lacing.Very high due to tight-mesh, high-grade rotation braiding.Standard Polyester Laces(Mass-market synthetics)High elastic stretch; yields noticeably with every step.Heel slippage increases gradually while walking.Tough, but deforms and elongates permanently over time.Loose Flat Knits(Unwaxed)Wears out and sags unevenly at the eyelet friction points.Quickly loses baseline tension; unstable fit within the shoe.Moderate; fibres fray and break along the edges over time."}},{"@type":"Question","name":"Which shoelace length should you choose for 4 mm flat shoelaces with 4 to 7 pairs of eyelets?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"F\u00fcr Halbschuhe und Sneaker mit 4 bis 5 \u00d6senpaaren w\u00e4hlt man eine L\u00e4nge von 75 cm, bei 5 bis 6 \u00d6senpaaren 90 cm und f\u00fcr Sneaker oder Chukkas mit 6 bis 7 \u00d6senpaaren 120 cm.Der exakte L\u00e4ngenbedarf h\u00e4ngt vom Abstand der \u00d6senleisten ab: Eng geschnittene Halbschuhe ben\u00f6tigen k\u00fcrzere Enden f\u00fcr eine elegante Schleife, w\u00e4hrend weiter sitzende Sneaker mit volumin\u00f6ser Zunge zur n\u00e4chsth\u00f6heren Staffelung greifen.  \u00d6sen- & L\u00e4ngenmatrix F4-CS    Seitlich wischbar \u00d6senpaareEmpfohlene F4-CS L\u00e4ngeParallelschn\u00fcrungKreuzschn\u00fcrung (Criss-Cross)Typische Schuhtypen2 \u2013 3 \u00d6sen60 cm60 cm60 cmChukka Boots, flache Sommerhalbschuhe.4 \u2013 5 \u00d6sen75 cm75 cm75 cmKlassische Derbys, Budapester, Low-Top Sneaker.5 \u2013 6 \u00d6sen90 cm90 cm90 cmKlassische Sneaker, weiter geschnittene Halbschuhe.6 \u2013 7 \u00d6sen120 cm120 cm120 cmCourt Sneaker, Mid-Tops, feine Schn\u00fcrstiefeletten.8+ \u00d6sen \/ High-Tops120 \u2013 150 cm120 cm120 \u2013 150 cmHigh-Top Sneaker, Dress Boots mit hoher Schn\u00fcrung."}}] }