Parameter:

Model	MM-ER128	MM-EF135	MM-EF240	MM-EF340	MM-EF455	MM-EF570	MM-EF9120	MM-EF25130
Shape	Round	flat
Rib	1	1	2	3	4	5	9	25
Content	Polyester+ Spandex		latex+ Polyester	Polyester+ Spandex			latex+ Polyester	Polyester+ Spandex
Elasticity[1]	1:3.0	1:2.8	1:3.6	1:2.8~1:3.0			1:2.5	1:2.8~1:3.0
Width mm	2.5-2.8	3.5	4.0	4.0	5.5	7.0	12	13
Length yards/kg	1200	880	800	680	520	340	110	160
Package	Way Inner: Poly Bag, Way Outer: Carton Size: 71*46*37 CM                       Size: 37*37*20 CM Weight: 30 KG~35 KG                 Weight: 5 KG

[1] 1:3.0 has an expansion of 10cm = >30cm

[2] Customized Colors

Extra strength elastic band for gas masks by adding another rib: from 9 ribs, 12mm width.

Production Video