kids playing on the Thetis Activity Gym Extension

Thetis Activity Gym Extension

£199.00 £189.05 SAVE 5%

Extension piece for

Colour: Barley White and Beech

Barley White and Beech

american expressapple paygoogle payklarna-pay-latermasterpaypalvisa

Frequently bought together

Total price:£598.00 £548.15

Encourage your little adventurers to create a world of their own with this extension piece for our Thetis Activity Mini Gym (must be purchased separately). This piece adds a platform for the slide and extended climbing bars, meaning kids can share their mini gym adventures with one more friend. Images depict Thetis Activity Mini Gym & Extension together. 

Crafted from a combination of sustainably-sourced solid wood and engineered timber, this play set is built to last and withstand family life. Offering endless fun, the extended activity gym can be used in different configurations and the slide can be reversed for use as a beginners climbing wall.

When it's not being used for play, why not transform the climbing frame into the ultimate den? Fill the base with cosy floor cushions and drape blankets over the top to create a perfect little nook for reading or a movie marathon.

  • Extension for our mini activity gym adding a platform and longer climbing monkey bars
  • Crafted from a combination of sustainably-sourced European Beech and engineered timber
  • Designed to develop children's motor skills, balance, strength and agility
  • Our nursery-friendly finish enhances the natural beauty of our timber
  • Packed flat for easy home assembly with full instructions included
  • Intended for indoor use only
  • Children should be supervised at all times
  • Designed for children aged 2 to 8 years old

Safety information Adult supervision required when in use. Not for commercial use.
Materials & finish Crafted with a combination of plywood & sustainably sourced European Beech timber.
Age recommendation Recommended from 2 to 8 years old. 
Assembled dimensions (when connected to Thetis Activity Mini Gym) Height: 121cm | Width: 113cm | Length: 202.5cm
Box dimensions H: 128.2cm | W: 63.7cm | L: 18.7cm | Weight: 19.6kg
Assembly Requires assembly.
Warranty Comes with a 1 year manufacturer's warranty. If there are any issues with your item, you can lodge a warranty claim here.


Enjoy free delivery on all orders to mainland UK with no minimum spend.

The below lead times are estimates and are subject to change during busy periods. Unfortunately, we are unable to offer deliveries guaranteed by a specific date. Please expect small furniture and accessories to be delivered seperately to large furntiure.

Small Furniture & AccessoriesSent via Yodel and should take 4-5 business days.
Large FurnitureSent via Panther and should take around 7-10 business days. Panther will contact you within 48 hours of us processing your order to book your delivery via SMS. The evening before your chosen delivery date, you will receive an SMS confirming a 2 hour delivery slot. On the day of your delivery, your delivery driver will call when they're approximately 45 minutes from your location.
Bedding & HardwareSent via Royal Mail and should take 4-5 business days

Further details on delivery can be found on our Delivery Information page. If you have any questions or wish to return your order, please email