Small Batch Cannabis

Massachusetts Premium Cannabis Dispensaries


Our store is now open from 8 AM until 10 PM, seven days a week!

Pre-order at this location will now be available from 7:45 AM until  7PM.

If you are looking to learn more about our current limits and product availability, please check our PDF menu above. We update the menus throughout the day!

Follow us on Twitter for live updates on lines & wait times.

Want to skip the line? Try our Pre-Order!


We have a deep passion for cannabis and the role it plays in improving people’s lives. Here at Theory, we cultivate cannabis and produce a wide variety of extracts and infused products at our Bridgewater, Massachusetts facility. We also have retail locations in both Bridgewater (medical) and Great Barrington (medical and recreational), where our customers can learn about cannabis and purchase our products.

Focused on small batches and unique genetics, we strive to develop a premium range of flower, concentrates, and infused products for consumers in Massachusetts. In doing so, we commit ourselves to constant reinvention and self-scrutiny, working with and listening to each other, to further improve and enhance your cannabis experience.

Theory T-Pen



Theory’s T-Pen is our flagship line of vape pen hardware, designed to work with our in-house glass CO2 cartridges. The T-Pen hardware is available in two configurations, ‘button’ and ‘buttonless.’ The T-Pen with a button has an adjustable battery, and allows the user to prime the cartridge with heat prior to inhalation, which provides a stronger vaping experience. The ‘buttonless’ T-Pens are extremely easy to operate – inhaling on the cartridge automatically turns on the device and begins the vaporizing process. Each T-Pen comes with a storage case and a USB charger.

  • T-Pen "GO"

    Our Newest Handheld Vaporizer

    • $20
  • T-Pen

    Buttonless Battery

    • $15



Theory offers a wide variety of high quality vaporizers. From the premium Crafty Vape to the discrete, portable PuffCo, Theory has you covered for all your flower and concentrate vaping needs. Stop by anytime to discuss our selection in more detail with one of our cannabis consultants.

  • Crafty Handheld Vape

    Best For: Flower + Concentrates

    • $339
  • Magic Flight Launch Box

    Best for: Flower

    • $119
  • Volcano digit desktop vape

    Best for: Flower

    • $599



Theory carries a variety of staff selected, high-quality Glassware, including American-Made pieces from local artists at Witch Dr. located in Salem, Ma, along with many other options from Grav Labs and the Jane West Collection. Stop by anytime to discuss our selection in more detail with one of our cannabis consultants. Our staff looks forward to recommending the ideal glassware for your needs.

  • Jane West Bubbler

    By Grav Labs

    • $120
  • Witch Dr

    Collection of American-Made Glassware

    • $20+

Save Time. Pre-Register.

Pre-Register & Receive

20% OFF

your first $100 worth of Theory products at your first visit ($20 Value)

Maybe later

Thanks! You have successfully pre-registered and your 20% OFF gift has been credited to your account, which can be redeemed at your first visit.

**Please note, this is for medical patients only.

We look forward to meeting you soon!

Welcome to Theory

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