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Container Styles Guide


Our Container Styles info page defines common bottle and jar terminology to help you select the right container. The image below explains basic container "anatomy", to which we will refer throughout this article.



  • Mouth - The opening at the top of a container
  • Neck Finish - The area of a container that holds a cap or closure. For more information about neck finishes, visit our neck finish info page
  • Shoulder - The sloped area of a container between the neck and body with a curved radius
  • Label Panel - A flat area upon which a label can be applied. Typically 1/8" to 1/4" down from the shoulder and up from the base
  • Wall - The thickness of the container, which is typically measured along the sides
  • Base - The bottom of a container, which has a curved radius


General Bottle Shapes

A plastic or glass bottle is considered to be round when the container's horizontal cross section or base is a circle. An oval bottle has an oval-shaped base while an oblong bottle has a rounded rectangular base.
Round Bottles



Oval Bottles

Oblong Bottles



Boston Round Bottles

(boston rounds, round bottles, squat boston rounds)

Boston rounds have straight sides with gradually curved shoulders. SKS' boston round bottles are considered to be a "squat" style with a wider, shorter profile than traditional boston rounds.

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Boston Round Bottles

Cosmo Round Bottles

(cosmo rounds, bullet bottles, jefferson round bottles)

Cosmo rounds are tall, narrow bottles with gradually sloped shoulders. Cosmo round bottles are narrower versions of boston rounds.

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Cosmo Round Bottles


Cylinder Bottles

(cylinder rounds, cylindrical bottles)

Cylinder bottles are tall and narrow with straight sides. These bottles have horizontal shoulders that transition into the sides abruptly.

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 Cylinder Bottles

Pharmaceutical Bottles

(pharm rounds, round packer bottles, tablet rounds, pill bottles, wide mouth rounds)

Pharmaceutical rounds are straight-sided, wide-mouth bottles with short, sloped shoulders.

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Pharmaceutical Bottles


Sauce Bottles

(woozy bottles, woozey bottles, keuka bottles)

A round bottle with a narrow neck that tapers into a wider base. Woozy bottles have a gradual, smooth taper from neck to base while sauce bottles have a more rounded shoulder. Sauce bottles often have indented label panels.

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Sauce Bottles

Cosmo Oval Bottles

A cosmo oval is a tall bottle with a narrow depth that has gradually sloped shoulders and an oval base.

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Cosmo Oval Bottles


Straight-Sided Ovals

These oval bottles have straight vertical sides, a narrow depth, horizontal shoulders and oval-shaped bases.

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Straight-Sided Ovals

Flask Bottles

(apothecary bottles, oblong bottles, flasks)

Similar to a straight-sided oval, a flask has a narrow depth and horizontal shoulders with an oblong-shaped base.

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Flask Bottles


Tottle Bottles

(inverted oval bottles, tube bottles, Malibu tubes)

Tottles are oval bottles with rounded bases meant to stand on their caps.

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Tottle Bottles

Naples Oval Bottles

An exception to the "oval" rule, this bottle has a round base but an oval-shaped cross section. A naples oval has gradually sloped shoulders that taper down to the narrow base.

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Naples Oval Bottles



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