Three designs worth separating
Cherokee's 4100 lists a full drawstring waistband. Its WW110 has a rib-knit elastic waistband and explicitly no drawstring. The WW120 combines a flat front, elastic at the back and an adjustable cord. JAANUU Xenos offers another hybrid, pairing a knit rib waistband with a drawcord.
Those details matter more than a search filter labeled pull-on. Pull-on describes how you put the pants on; it does not tell you whether you can tighten them. Yoga waist is also a design description rather than a promise of any particular rise, firmness or adjustment range. Read the actual waistband construction before ordering.
Choose a drawstring when adjustment matters
A cord can help secure a waistband that otherwise feels slightly loose, and it lets you change the fit after putting the pants on. The tradeoff is the need to tie and untie it, plus a knot that may be noticeable beneath a tucked top. Try the fastening yourself rather than judging only how the waistband looks.
A drawstring cannot repair every sizing problem. If the seat or thighs are too tight, tightening the waist will not create room there. If you must gather a large amount of fabric to prevent slipping, a different size, rise or cut may give you a cleaner and more stable fit.
Choose elastic-only when simplicity matters
An elastic-only waist avoids a knot and makes getting dressed straightforward. Its limitation is the lack of fine adjustment: the size and elastic tension have to be right for you. Pay particular attention to both seated comfort and loaded-pocket stability, since a waistband can pass one check and fail the other.
Do not assume a wide waistband will always feel softer than a narrow one. Width is only one variable. The elastic's firmness, the covering material, the rise and the amount of stretch all contribute to the result. Your own try-on is more useful than treating one descriptive word as a comfort rating.
The hybrid is useful, but still needs fitting
A combined waistband gives you stretch and a way to secure it. That can be a good starting point when you are uncertain, especially if your pants carry several items. However, a firm elastic band will not become comfortable simply because a cord is present; loosening the cord only changes the adjustment it provides.
Check the rise alongside the waistband type. The same amount of pressure can feel different above, at or below your natural waist. If the band folds while seated, consider whether the rise conflicts with where your torso bends before deciding you need a different fastening system.
Use a seated check before buying multiples
Spend several minutes sitting in the pants with your intended top. Then stand, walk and add your usual clean pocket contents. A good choice should remain in position without repeated retightening or uncomfortable pressure. Keep your first order modest until you know how that specific waistband behaves and have checked the care label.

