Mandala Crafts 24 Assorted Colors Flat Waxed Thread for Leather Sewing - 55 X 24 Yds 150D 0.8mm Polyester Leather Thread String Review (2026)

What is in the pack

This set from Mandala Crafts includes 24 assorted colors of flat waxed thread, each spool holding 55 yards, for a combined 24 by 55 yards across the full pack. The thread is 150D weight polyester at 0.8mm, waxed and flat in profile rather than round, which is a common choice for hand saddle stitching since a flat thread tends to sit more neatly inside diamond-shaped stitch holes made by a pricking iron or diamond chisel. Mandala Crafts is a US-based crafting supplier founded in 2001 and known for producing a range of thread, cord, and jewelry-making materials, with this waxed thread line marketed specifically toward leatherwork, bookbinding, and general hand stitching.

Why flat, waxed and polyester matter

The wax coating on this thread serves two purposes: it helps the thread resist fraying as it is repeatedly pulled through leather during saddle stitching, and it adds a small amount of grip that helps stitches stay snug once pulled tight. Polyester as a fiber is durable, resists UV fading and moisture better than natural fibers like linen, and does not stretch or shrink significantly over time, which keeps finished stitching consistent as the leather item ages. A flat profile, as opposed to a round twisted cord, tends to lie down cleanly against the leather surface rather than sitting proud, giving a slightly more tailored look along the stitch line, which is part of why flat waxed thread is popular for wallets and other visible stitching.

Working with 24 colors

Having 24 colors on hand means a stitcher can match thread to leather color closely for a subtle, tone-on-tone look, or pick a contrasting color deliberately for a decorative accent stitch line, without having to order individual spools in advance for every project. This is especially useful for makers who work across a range of leather colors or who sell customized pieces where customers may request specific thread colors. Because each color comes on its own 55-yard spool rather than one long continuous length, thread management during a project is straightforward, though very color-diverse projects with multiple color changes will use up several partial spools rather than one continuous run.

Practical limits to know

At 55 yards per color, this pack is better suited to smaller accent projects, sample work, and multi-color pieces than a single large project stitched entirely in one shade, since a bigger item like a full tote bag or a long belt could use up most or all of one spool on its own. The flat thread profile, while good for sitting neatly in stitch holes, can twist during stitching if not managed carefully, particularly on long, continuous pulls, so keeping tension even and periodically letting the needle and thread hang free to untwist helps avoid a kinked stitch line. As with most waxed thread, some wax residue can transfer to hands and tools during extended stitching sessions, which is normal but worth expecting if you are new to waxed thread specifically.

Who this thread pack suits

This is a strong choice for leatherworkers who want a broad color range on hand for wallets, small bags, keychains, and other smaller goods where color matching or a deliberate contrast stitch matters. It also suits crafters doing custom or made-to-order work, where different customers may want different thread colors without needing to special order each one. Skip it if your main project needs a single continuous run of thread longer than about 55 yards in one color, since a dedicated large spool in that shade will be more efficient than working from this multi-color pack. For anyone building a flexible thread stash for varied small leathergoods work, the 24-color range covers most common needs in one purchase.

Frequently asked questions