Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white
Brooks Glycerin GTS 21 Womens | Black/grey/white

Brooks Glycerin GTS 21 Womens | Black/grey/white

Regular price£165.00
Tax included. Shipping calculated at checkout.

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  • Free UK shipping over £75.00
  • Up to 60 days returns
  • Safe and secure checkout
  • Genuine product guarantee - fully authorised reseller

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Click and collect

Click & Collect

  • Ready for collection within 48 hours (Usually same day)
  • Email notification when ready
  • Collection from our Portsmouth location

Note - Please bring with you a valid form of ID and your order confirmation.


Standard delivery

Standard Delivery

  • Arrives within 2-5 working days
  • Dispatched within 24 hours
  • Dispatch days Monday-Friday


FREE for all orders over £75.00

Expedited Delivery

Express Delivery

  • Arrives within 1-2 working days
  • Dispatched within 24 hours
  • Dispatch days Monday-Friday


Special Delivery

Special Delivery (delivered before 1pm)

  • Arrives next day guaranteed
  • Dispatched within 24 hours
  • Dispatch days Monday-Friday

Note - order must be placed before 1pm for guaranteed next day delivery. Orders placed after this time will be dispatched the next working day


International Delivery

International Delivery

  • Arrives within 3-14 working days
  • Dispatched within 48 hours
  • Dispatch days Monday-Friday

Note - Due to new EU customs policies, delivery times may be delayed.


Tracking information

Tracking information

If your order qualifies for a specific type of postage (ie. next day delivery or special delivery) your tracking number will be sent with your confirmation email.

If you have a 'signed for' parcel being delivered, please note that the tracking code will only update at the time a signature is provided. You will not see any updates before this.

No Hassle Returns

We all change our mind from time to time, some people more than others! So we understand that you may wish to return an item for lots of different reasons; no worries!


Simply return the item in its original condition with a completed returns form (using the button below) to us and we will arrange an exchange or refund.

In the event that the item is not returned in the original or resell-able condition (including packaging), the item will be returned and/or a re-stocking fee will be charged. You will be contacted before any actions are taken.

In the event of a faulty product we will cover the return postage up to the value of £5.00

Fast Processing

We’ll process your request the day we receive it, but please allow up to 7 working days. You can do this for refunds anytime within 14 days from the date you received the item.

Easy returns

We completely understand that having the right fit and/or style is crucial to your comfort and performance, that’s why we always recommend that you come in and try before you buy; however if this isn’t possible and you find that what you have bought from us isn’t quite right, then send it back and try again!

Please note, all returns must be received in the original state they were received in, should the item(s) be deemed unfit for resale and/or damaged in anyway charges may apply to your refund/credit. Should this happen all our customers will be notified via email first.

Returns Address:

Web Returns Alexandra Sports
140 Gladys Avenue,

Missing Deliveries

In the rare event that you haven’t received your item within the estimated time slot then please contact us on 02392 698285 or email: with your order details and we can track your parcel and find out what’s happened.

All claims for missing items must be made within 28 days of the estimated delivery date.


Apart from the delivery time exceptions, noted above, we do have a few exceptions where deliveries are either not possible or our customer service team will need to contact you to explain your options before processing and charging for your order; these may result in a slight delay in processing.

Here is a list of examples that may be relevant:

  • An item from your order is either found to be faulty or damaged before we dispatch and there is no more stock available in this product – we will contact you to discuss alternatives or confirm a cancellation.
  • You are attempting to order from outside the European Union or to a PO Box address.
  • Your order is flagged by our system as a possible fraudulent order – apologies if this happens; however, the system makes this decision based upon information from banks and other agencies as well as the combination of items ordered; we will contact you to confirm your identity and order before processing such orders. This is for everyone’s security so please don’t be offended.
  • Your item is not available – We operate a state-of-the-art live stocking system that is accurate to within 5 minutes; unfortunately even this still leaves room for rare stock control errors where your item may be shown as available; when in fact it is out of stock. On the rare occasion that this may occur, we will contact you to discuss further options.

Brooks Glycerin GTS 21 Running Shoes

Lace-up and head out in supreme comfort. For the Glycerin GTS 21 Running Shoe, Brooks has added 2mm more super soft DNA LOFT v3 cushioning for extra plushness, while their innovative GuideRails support system keeps you comfortably in stride. Plus an updated, streamlined upper adds breathability.

  • Engineered Warp Knit Upper - Feels soft against your foot for a comfortable fit.

  • Breathable - To keep feet feeling cool and comfortable.

  • Improved Fit - The new upper allows for a flexible, accommodating fit.

  • Padded Collar and Tongue - Eradicate chafing and rubbing.

  • Traditional Lace Closure - Secures the midfoot for a locked-in feel.

  • DNA LOFT v3 Midsole - Super-soft nitrogen-infused cushioning maximises softness and provides supreme comfort.

  • Plush Ride - Provided by an additional 2mm of DNA LOFT v3 in the midsole.

  • GuideRails - Provides structure and whole-body support.

  • Broad Platform - For smooth and stable transitions.

  • New RoadTack Rubber - Includes recycled silica and offers lightweight and durable traction on road surfaces.

  • Sustainability - 61.1% recycled materials in the upper and 3.75 plastic bottles diverted from landfill.

  • Weight - 297.7g.

  • Drop - 10mm.

Engineered Warp Knit Upper
With a new, engineered warp knit upper, the Brooks Glycerin GTS 21 offers exceptional breathability alongside a flexible and accommodating fit that stays soft against your foot. The engineered upper encourages cool air to permeate the fabric, removing uncomfortable heat build-up to maintain a cool, regulated temperature for a healthy environment in which feet can thrive. 

The knit feels soft for supreme softness and smooth comfort surrounding the foot. A padded collar and tongue provide exceptional comfort, eradicating chafing and rubbing from hard edges against the skin. Finished with a traditional lace closure the Glycerin GTS 21 offers a secure, locked-in feel that reduces in-shoe slippage.

DNA LOFT v3 Midsole
Featuring the same DNA Loft v3 midsole as the Glycerin 20, the Brooks Glycerin GTS 21 Running Shoe is soft and comfortable. This new and updated version has 2mm more of this super-soft, nitrogen-infused cushioning technology to maximise softness.

The DNA LOFT v3 cushioning carries the foot well and even moulds itself to the shape of the underfoot, allowing the platform to fully support the curvature of the underfoot. Infused with nitrogen to be as soft, light and durable as possible, Brooks' DNA LOFT v3 has been designed to be super soft.

Having this cushioning and support helps to lessen the impact placed upon your joints as well as attenuate shock, minimising the potential risk of injury or discomfort. Thanks to the added 2mm of this cushioning, the Glycerin GTS 21 further enhances this when compared to the previous version. The plush midfoot transition zone is designed to propel your movements from heel to toe, especially for a neutral runner to maintain the most efficient gait possible for a smoother ride. Lastly, the Brooks Glycerin GTS 21 features industry-leading support for supreme comfort. Brooks' innovative GuideRails technology supports your body in its natural motion path while keeping excess movement in check.

RoadTack Rubber Outsole
Designed with a broad platform, the Glycerin GTS 21 stabilises your foot and promotes smooth heel-to-toe transitions throughout wear. A new RoadTack rubber features on the outsole to provide exceptional durability that delivers a sustainable performance time and time again.

This RoadTack rubber includes recycled silica for a lightweight and durable finish. In addition, the outsole possesses high grip and traction properties to ensure a firm, assured foothold so you can run with both comfort and confidence. Lastly, the shoe is able to flex as one with the foot instead of restricting it without compromising grip and durability for a more comfortable and confident ride.

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