# Seatpost Bike Bag TOPEAK BackLoader X 15L Black – rear seatpost trunk bag, 15 L capacity

**URL:** https://aio.lv/en/product--topeak-t-tbp-blx3b--8473015
**Data updated:** 2026-04-24 17:39 (EEST)
**Category:** Kids’ Ride-On Accessories
**Manufacturer:** TOPEAK
**Manufacturer code:** T-TBP-BLX3B
**EAN:** 4710069706435
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 77.99 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 64.45 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--topeak-t-tbp-blx3b--8473015

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Tuesday | free |
| Pickup points | 03.07.2026 | 1.89 EUR |
| Courier delivery to door | 03.07.2026 | 4.99 EUR |

## Summary description

TOPEAK BackLoader X is a 15-litre rear seatpost bike bag designed to mount under the saddle or to the seatpost for carrying essentials on rides. Constructed for everyday touring and commuting, it provides a single main compartment for clothing, tools and snacks, with secure attachment to the bike and a low-profile shape to reduce drag.

## Long description

TOPEAK BackLoader X 15L is a rear seatpost trunk bag designed for cyclists who need a compact, low-profile solution for carrying clothes, tools and snacks. The bag mounts under the saddle or to the seatpost and offers a single 15-litre main compartment with a shape intended to reduce aerodynamic drag. Constructed for everyday touring and commuting, the BackLoader X balances capacity and streamlined design to fit a range of bicycle types and riding styles.
Advantages
The BackLoader X provides a straightforward storage solution with a durable outer fabric and secure mounting system that keeps the bag stable while riding. Its 15 L capacity accommodates a change of clothing, small pannier-sized items and repair tools without adding excessive bulk. The low-profile form and seatpost mounting options help maintain bike handling and reduce interference with pedaling or luggage. Simple access to the single main compartment makes loading and unloading quick and predictable.
Suitable for
 Daily commuting where minimal but reliable storage is needed
 Short to medium-length touring trips requiring compact luggage
 Bikepacking or gravel rides when combined with other bike bags
 Riders seeking a rear-mounted bag that preserves aerodynamics
When it may not be suitable
This rear seatpost trunk bag may not be suitable for riders who need large-volume cargo capacity or want multiple compartments for detailed organisation. Cyclists carrying heavy loads or bulky camping gear should consider larger panniers or frame bags designed for high-capacity transport. Also, bicycles with limited seatpost clearance or unusual saddle/seatpost setups may require verification of fit before purchase.
Key specifications
 Capacity: 15 litres
 Mounting: under-saddle and seatpost-compatible attachment system
 Configuration: single main compartment
 Shape: low-profile aerodynamic design
 Intended use: touring, commuting, bikepacking
How to use
Attach the BackLoader X to your saddle rails and seatpost using the integrated straps and fasteners, ensuring a snug fit that prevents lateral movement. Place bulkier items towards the centre of the compartment close to the bike frame to maintain balance, with lighter items and frequently used tools near the opening for easier access. Check mounting security before each ride and periodically tighten straps if necessary. For longer trips, combine the trunk bag with handlebar or frame bags for distributed load-carrying.
What to consider before purchase
 Confirm available space under the saddle and clearance to the rear wheel
 Verify compatibility with your saddle rails and seatpost diameter/shape
 Decide if a single-compartment 15 L bag meets your organisation needs
 Consider combining with additional luggage for longer trips
Usage recommendations
For stable performance, pack heavier items close to the bike and use the bag in combination with other luggage options on longer rides; routinely inspect straps and attachment points for wear and retighten before riding.

## FAQ

### How much does the TOPEAK BackLoader X 15L Bike Bag cost, and is it available for purchase?

The price is 77.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 14 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Tuesday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can TOPEAK BackLoader X 15L Bike Bag be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All TOPEAK products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized TOPEAK service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/8473015/51489487_large.webp