Schmetz Sewing Machine Needles - Jeans and Denim. 90/14 Pins + Needles_Hand Sewing As with all the Tulip

As with all the Tulip needles

sometimes called 'longs' are a relatively long needle

These needles have a very sharp point and a stiffer shank to resist needle deflection and allow penetration of dense fabric

You could always use plain rib on the bottom which would be more cost effective

4 x 25mm/1″ metal sliders

Schmetz Sewing Machine Needles - Jeans and Denim. 90/14 Pins + Needles_Hand Sewing As with all the TulipDesigned for optimal sewing with denim fabrics, heavy twill, work wear, and other densely woven fabrics such as canvas and heavy linens. These needles have a very sharp point and a stiffer shank to resist needle deflection and allow penetration of dense fabric. This pack includes 5 x size 90 needles. Suitable for medium heavy weight denim Price for one pack of five needles. If you need help selecting the correct needle for your project, you can check